diff --git a/vendor/github.com/spf13/cobra/doc/man_docs.go b/vendor/github.com/spf13/cobra/doc/man_docs.go
deleted file mode 100644
index ae44aaac78..0000000000
--- a/vendor/github.com/spf13/cobra/doc/man_docs.go
+++ /dev/null
@@ -1,231 +0,0 @@
-// Copyright 2015 Red Hat Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package doc
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"os"
-	"path/filepath"
-	"sort"
-	"strings"
-	"time"
-
-	mangen "github.com/cpuguy83/go-md2man/md2man"
-	"github.com/spf13/cobra"
-	"github.com/spf13/pflag"
-)
-
-// GenManTree will generate a man page for this command and all descendants
-// in the directory given. The header may be nil. This function may not work
-// correctly if your command names have - in them. If you have `cmd` with two
-// subcmds, `sub` and `sub-third`. And `sub` has a subcommand called `third`
-// it is undefined which help output will be in the file `cmd-sub-third.1`.
-func GenManTree(cmd *cobra.Command, header *GenManHeader, dir string) error {
-	return GenManTreeFromOpts(cmd, GenManTreeOptions{
-		Header:           header,
-		Path:             dir,
-		CommandSeparator: "_",
-	})
-}
-
-// GenManTreeFromOpts generates a man page for the command and all descendants.
-// The pages are written to the opts.Path directory.
-func GenManTreeFromOpts(cmd *cobra.Command, opts GenManTreeOptions) error {
-	header := opts.Header
-	if header == nil {
-		header = &GenManHeader{}
-	}
-	for _, c := range cmd.Commands() {
-		if !c.IsAvailableCommand() || c.IsHelpCommand() {
-			continue
-		}
-		if err := GenManTreeFromOpts(c, opts); err != nil {
-			return err
-		}
-	}
-	section := "1"
-	if header.Section != "" {
-		section = header.Section
-	}
-
-	separator := "_"
-	if opts.CommandSeparator != "" {
-		separator = opts.CommandSeparator
-	}
-	basename := strings.Replace(cmd.CommandPath(), " ", separator, -1)
-	filename := filepath.Join(opts.Path, basename+"."+section)
-	f, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	headerCopy := *header
-	return GenMan(cmd, &headerCopy, f)
-}
-
-type GenManTreeOptions struct {
-	Header           *GenManHeader
-	Path             string
-	CommandSeparator string
-}
-
-// GenManHeader is a lot like the .TH header at the start of man pages. These
-// include the title, section, date, source, and manual. We will use the
-// current time if Date if unset and will use "Auto generated by spf13/cobra"
-// if the Source is unset.
-type GenManHeader struct {
-	Title   string
-	Section string
-	Date    *time.Time
-	date    string
-	Source  string
-	Manual  string
-}
-
-// GenMan will generate a man page for the given command and write it to
-// w. The header argument may be nil, however obviously w may not.
-func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error {
-	if header == nil {
-		header = &GenManHeader{}
-	}
-	fillHeader(header, cmd.CommandPath())
-
-	b := genMan(cmd, header)
-	_, err := w.Write(mangen.Render(b))
-	return err
-}
-
-func fillHeader(header *GenManHeader, name string) {
-	if header.Title == "" {
-		header.Title = strings.ToUpper(strings.Replace(name, " ", "\\-", -1))
-	}
-	if header.Section == "" {
-		header.Section = "1"
-	}
-	if header.Date == nil {
-		now := time.Now()
-		header.Date = &now
-	}
-	header.date = (*header.Date).Format("Jan 2006")
-	if header.Source == "" {
-		header.Source = "Auto generated by spf13/cobra"
-	}
-}
-
-func manPreamble(out io.Writer, header *GenManHeader, cmd *cobra.Command, dashedName string) {
-	description := cmd.Long
-	if len(description) == 0 {
-		description = cmd.Short
-	}
-
-	fmt.Fprintf(out, `%% %s(%s)%s
-%% %s
-%% %s
-# NAME
-`, header.Title, header.Section, header.date, header.Source, header.Manual)
-	fmt.Fprintf(out, "%s \\- %s\n\n", dashedName, cmd.Short)
-	fmt.Fprintf(out, "# SYNOPSIS\n")
-	fmt.Fprintf(out, "**%s**\n\n", cmd.UseLine())
-	fmt.Fprintf(out, "# DESCRIPTION\n")
-	fmt.Fprintf(out, "%s\n\n", description)
-}
-
-func manPrintFlags(out io.Writer, flags *pflag.FlagSet) {
-	flags.VisitAll(func(flag *pflag.Flag) {
-		if len(flag.Deprecated) > 0 || flag.Hidden {
-			return
-		}
-		format := ""
-		if len(flag.Shorthand) > 0 && len(flag.ShorthandDeprecated) == 0 {
-			format = fmt.Sprintf("**-%s**, **--%s**", flag.Shorthand, flag.Name)
-		} else {
-			format = fmt.Sprintf("**--%s**", flag.Name)
-		}
-		if len(flag.NoOptDefVal) > 0 {
-			format = format + "["
-		}
-		if flag.Value.Type() == "string" {
-			// put quotes on the value
-			format = format + "=%q"
-		} else {
-			format = format + "=%s"
-		}
-		if len(flag.NoOptDefVal) > 0 {
-			format = format + "]"
-		}
-		format = format + "\n\t%s\n\n"
-		fmt.Fprintf(out, format, flag.DefValue, flag.Usage)
-	})
-}
-
-func manPrintOptions(out io.Writer, command *cobra.Command) {
-	flags := command.NonInheritedFlags()
-	if flags.HasFlags() {
-		fmt.Fprintf(out, "# OPTIONS\n")
-		manPrintFlags(out, flags)
-		fmt.Fprintf(out, "\n")
-	}
-	flags = command.InheritedFlags()
-	if flags.HasFlags() {
-		fmt.Fprintf(out, "# OPTIONS INHERITED FROM PARENT COMMANDS\n")
-		manPrintFlags(out, flags)
-		fmt.Fprintf(out, "\n")
-	}
-}
-
-func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
-	// something like `rootcmd-subcmd1-subcmd2`
-	dashCommandName := strings.Replace(cmd.CommandPath(), " ", "-", -1)
-
-	buf := new(bytes.Buffer)
-
-	manPreamble(buf, header, cmd, dashCommandName)
-	manPrintOptions(buf, cmd)
-	if len(cmd.Example) > 0 {
-		fmt.Fprintf(buf, "# EXAMPLE\n")
-		fmt.Fprintf(buf, "\n%s\n\n", cmd.Example)
-	}
-	if hasSeeAlso(cmd) {
-		fmt.Fprintf(buf, "# SEE ALSO\n")
-		seealsos := make([]string, 0)
-		if cmd.HasParent() {
-			parentPath := cmd.Parent().CommandPath()
-			dashParentPath := strings.Replace(parentPath, " ", "-", -1)
-			seealso := fmt.Sprintf("**%s(%s)**", dashParentPath, header.Section)
-			seealsos = append(seealsos, seealso)
-			cmd.VisitParents(func(c *cobra.Command) {
-				if c.DisableAutoGenTag {
-					cmd.DisableAutoGenTag = c.DisableAutoGenTag
-				}
-			})
-		}
-		children := cmd.Commands()
-		sort.Sort(byName(children))
-		for _, c := range children {
-			if !c.IsAvailableCommand() || c.IsHelpCommand() {
-				continue
-			}
-			seealso := fmt.Sprintf("**%s-%s(%s)**", dashCommandName, c.Name(), header.Section)
-			seealsos = append(seealsos, seealso)
-		}
-		fmt.Fprintf(buf, "%s\n", strings.Join(seealsos, ", "))
-	}
-	if !cmd.DisableAutoGenTag {
-		fmt.Fprintf(buf, "# HISTORY\n%s Auto generated by spf13/cobra\n", header.Date.Format("2-Jan-2006"))
-	}
-	return buf.Bytes()
-}
diff --git a/vendor/github.com/spf13/cobra/doc/md_docs.go b/vendor/github.com/spf13/cobra/doc/md_docs.go
deleted file mode 100644
index fa13631804..0000000000
--- a/vendor/github.com/spf13/cobra/doc/md_docs.go
+++ /dev/null
@@ -1,175 +0,0 @@
-//Copyright 2015 Red Hat Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package doc
-
-import (
-	"fmt"
-	"io"
-	"os"
-	"path/filepath"
-	"sort"
-	"strings"
-	"time"
-
-	"github.com/spf13/cobra"
-)
-
-func printOptions(w io.Writer, cmd *cobra.Command, name string) error {
-	flags := cmd.NonInheritedFlags()
-	flags.SetOutput(w)
-	if flags.HasFlags() {
-		if _, err := fmt.Fprintf(w, "### Options\n\n```\n"); err != nil {
-			return err
-		}
-		flags.PrintDefaults()
-		if _, err := fmt.Fprintf(w, "```\n\n"); err != nil {
-			return err
-		}
-	}
-
-	parentFlags := cmd.InheritedFlags()
-	parentFlags.SetOutput(w)
-	if parentFlags.HasFlags() {
-		if _, err := fmt.Fprintf(w, "### Options inherited from parent commands\n\n```\n"); err != nil {
-			return err
-		}
-		parentFlags.PrintDefaults()
-		if _, err := fmt.Fprintf(w, "```\n\n"); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func GenMarkdown(cmd *cobra.Command, w io.Writer) error {
-	return GenMarkdownCustom(cmd, w, func(s string) string { return s })
-}
-
-func GenMarkdownCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) string) error {
-	name := cmd.CommandPath()
-
-	short := cmd.Short
-	long := cmd.Long
-	if len(long) == 0 {
-		long = short
-	}
-
-	if _, err := fmt.Fprintf(w, "## %s\n\n", name); err != nil {
-		return err
-	}
-	if _, err := fmt.Fprintf(w, "%s\n\n", short); err != nil {
-		return err
-	}
-	if _, err := fmt.Fprintf(w, "### Synopsis\n\n"); err != nil {
-		return err
-	}
-	if _, err := fmt.Fprintf(w, "\n%s\n\n", long); err != nil {
-		return err
-	}
-
-	if cmd.Runnable() {
-		if _, err := fmt.Fprintf(w, "```\n%s\n```\n\n", cmd.UseLine()); err != nil {
-			return err
-		}
-	}
-
-	if len(cmd.Example) > 0 {
-		if _, err := fmt.Fprintf(w, "### Examples\n\n"); err != nil {
-			return err
-		}
-		if _, err := fmt.Fprintf(w, "```\n%s\n```\n\n", cmd.Example); err != nil {
-			return err
-		}
-	}
-
-	if err := printOptions(w, cmd, name); err != nil {
-		return err
-	}
-	if hasSeeAlso(cmd) {
-		if _, err := fmt.Fprintf(w, "### SEE ALSO\n"); err != nil {
-			return err
-		}
-		if cmd.HasParent() {
-			parent := cmd.Parent()
-			pname := parent.CommandPath()
-			link := pname + ".md"
-			link = strings.Replace(link, " ", "_", -1)
-			if _, err := fmt.Fprintf(w, "* [%s](%s)\t - %s\n", pname, linkHandler(link), parent.Short); err != nil {
-				return err
-			}
-			cmd.VisitParents(func(c *cobra.Command) {
-				if c.DisableAutoGenTag {
-					cmd.DisableAutoGenTag = c.DisableAutoGenTag
-				}
-			})
-		}
-
-		children := cmd.Commands()
-		sort.Sort(byName(children))
-
-		for _, child := range children {
-			if !child.IsAvailableCommand() || child.IsHelpCommand() {
-				continue
-			}
-			cname := name + " " + child.Name()
-			link := cname + ".md"
-			link = strings.Replace(link, " ", "_", -1)
-			if _, err := fmt.Fprintf(w, "* [%s](%s)\t - %s\n", cname, linkHandler(link), child.Short); err != nil {
-				return err
-			}
-		}
-		if _, err := fmt.Fprintf(w, "\n"); err != nil {
-			return err
-		}
-	}
-	if !cmd.DisableAutoGenTag {
-		if _, err := fmt.Fprintf(w, "###### Auto generated by spf13/cobra on %s\n", time.Now().Format("2-Jan-2006")); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func GenMarkdownTree(cmd *cobra.Command, dir string) error {
-	identity := func(s string) string { return s }
-	emptyStr := func(s string) string { return "" }
-	return GenMarkdownTreeCustom(cmd, dir, emptyStr, identity)
-}
-
-func GenMarkdownTreeCustom(cmd *cobra.Command, dir string, filePrepender, linkHandler func(string) string) error {
-	for _, c := range cmd.Commands() {
-		if !c.IsAvailableCommand() || c.IsHelpCommand() {
-			continue
-		}
-		if err := GenMarkdownTreeCustom(c, dir, filePrepender, linkHandler); err != nil {
-			return err
-		}
-	}
-
-	basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".md"
-	filename := filepath.Join(dir, basename)
-	f, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	if _, err := io.WriteString(f, filePrepender(filename)); err != nil {
-		return err
-	}
-	if err := GenMarkdownCustom(cmd, f, linkHandler); err != nil {
-		return err
-	}
-	return nil
-}
diff --git a/vendor/github.com/spf13/cobra/doc/util.go b/vendor/github.com/spf13/cobra/doc/util.go
deleted file mode 100644
index a1c6b89ba6..0000000000
--- a/vendor/github.com/spf13/cobra/doc/util.go
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2015 Red Hat Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package doc
-
-import "github.com/spf13/cobra"
-
-// Test to see if we have a reason to print See Also information in docs
-// Basically this is a test for a parent commend or a subcommand which is
-// both not deprecated and not the autogenerated help command.
-func hasSeeAlso(cmd *cobra.Command) bool {
-	if cmd.HasParent() {
-		return true
-	}
-	for _, c := range cmd.Commands() {
-		if !c.IsAvailableCommand() || c.IsHelpCommand() {
-			continue
-		}
-		return true
-	}
-	return false
-}
-
-type byName []*cobra.Command
-
-func (s byName) Len() int           { return len(s) }
-func (s byName) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-func (s byName) Less(i, j int) bool { return s[i].Name() < s[j].Name() }