integration-cli: migrate some "info" tests to integration

- Updated TestInfoSecurityOptions to not rely on CLI output. Note that this
  test should be migrated to the integration suite, but that suite does not yet
  have checks for "Seccomp" and "AppArmor"
- TestInfoAPIWarnings: don't start with busybox because we're not running containers in this test
- Migrate TestInfoDebug to integration suite
- Migrate TestInsecureRegistries to integration suite (renamed to TestInfoInsecureRegistries)
- Migrate TestRegistryMirrors to integration suite (renamed to TestInfoRegistryMirrors)
- Migrate TestInfoDiscoveryBackend to integration suite
- Migrate TestInfoDiscoveryInvalidAdvertise to integration suite
- Migrate TestInfoDiscoveryAdvertiseInterfaceName to integration suite
- Remove TestInfoFormat, which is testing the CLI functionality, and there is an
  existing test in docker/cli (TestFormatInfo) covering this

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

integration-cli/docker_cli_info_unix_test.go

@@ -3,15 +3,30 @@
 package main
 
 import (
-	"strings"
+	"context"
 	"testing"
 
+	"github.com/docker/docker/client"
 	"gotest.tools/assert"
+	is "gotest.tools/assert/cmp"
 )
 
 func (s *DockerSuite) TestInfoSecurityOptions(c *testing.T) {
-	testRequires(c, testEnv.IsLocalDaemon, seccompEnabled, Apparmor, DaemonIsLinux)
+	testRequires(c, testEnv.IsLocalDaemon, DaemonIsLinux)
+	if !seccompEnabled() && !Apparmor() {
+		c.Skip("test requires Seccomp and/or AppArmor")
+	}
 
-	out, _ := dockerCmd(c, "info")
-	assert.Assert(c, strings.Contains(out, "Security Options:\n apparmor\n seccomp\n  Profile: default\n"))
+	cli, err := client.NewClientWithOpts(client.FromEnv)
+	assert.NilError(c, err)
+	defer cli.Close()
+	info, err := cli.Info(context.Background())
+	assert.NilError(c, err)
+
+	if Apparmor() {
+		assert.Check(c, is.Contains(info.SecurityOptions, "name=apparmor"))
+	}
+	if seccompEnabled() {
+		assert.Check(c, is.Contains(info.SecurityOptions, "name=seccomp,profile=default"))
+	}
 }