[aws|dns] Support for latency/weighted resource sets.

Support for CRUD on latency/weighted resource sets for AWS Route 53.
Updated to latest API version.

lib/fog/aws/dns.rb

@@ -89,7 +89,7 @@ module Fog
           @persistent = options[:persistent]  || true
           @port       = options[:port]        || 443
           @scheme     = options[:scheme]      || 'https'
-          @version    = options[:version]     || '2011-05-05'
+          @version    = options[:version]     || '2012-02-29'
 
           @connection = Fog::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
         end

lib/fog/aws/models/dns/record.rb

@@ -18,6 +18,9 @@ module Fog
         attribute :created_at,    :aliases => ['SubmittedAt']
         attribute :alias_target,  :aliases => ['AliasTarget']
         attribute :change_id,     :aliases => ['Id']
+        attribute :region,        :aliases => ['Region']
+        attribute :weight,        :aliases => ['Weight']
+        attribute :set_identifier,:aliases => ['SetIdentifier']
 
         def initialize(attributes={})
           self.ttl ||= 3600
@@ -89,7 +92,10 @@ module Fog
               :resource_records => [*value],
               :alias_target     => symbolize_keys(alias_target),
               :ttl              => ttl,
-            :type             => type
+              :type             => type,
+              :weight           => weight,
+              :set_identifier   => set_identifier,
+              :region           => region
           }
         end
 

lib/fog/aws/models/dns/records.rb

@@ -33,7 +33,7 @@ module Fog
         def get(record_id)
           data = connection.get_change(record_id).body
           new(data)
-        rescue Excon::Errors::Forbidden
+        rescue Excon::Errors::NotFound
           nil
         end
 

lib/fog/aws/models/dns/zones.rb

@@ -22,7 +22,7 @@ module Fog
         def get(zone_id)
           data = connection.get_hosted_zone(zone_id).body
           new(data)
-        rescue Excon::Errors::Forbidden
+        rescue Excon::Errors::NotFound
           nil
         end
 

lib/fog/aws/parsers/dns/list_resource_record_sets.rb

@@ -18,7 +18,7 @@ module Fog
           def end_element(name)
             if @section == :resource_record_set
               case name
-              when 'Name', 'Type', 'TTL'
+              when 'Name', 'Type', 'TTL', 'SetIdentifier', 'Weight', 'Region'
                 @resource_record_set[name] = value
               when 'Value'
                 @resource_record_set['ResourceRecords'] << value

lib/fog/aws/requests/dns/change_resource_record_sets.rb

@@ -58,6 +58,17 @@ module Fog
               ttl_tag = ''
               ttl_tag += %Q{<TTL>#{change_item[:ttl]}</TTL>} unless change_item[:alias_target]
 
+              weight_tag = ''
+              set_identifier_tag = ''
+              region_tag = ''
+              if change_item[:set_identifier]
+                set_identifier_tag += %Q{<SetIdentifier>#{change_item[:set_identifier]}</SetIdentifier>}
+                if change_item[:weight] # Weighted Record
+                  weight_tag += %Q{<Weight>#{change_item[:weight]}</Weight>}
+                elsif change_item[:region] # Latency record
+                  region_tag += %Q{<Region>#{change_item[:region]}</Region>}
+                end
+              end
               resource_records = change_item[:resource_records] || []
               resource_record_tags = ''
               resource_records.each do |record|
@@ -76,14 +87,15 @@ module Fog
                 alias_target_tag += %Q{<AliasTarget><HostedZoneId>#{hosted_zone_id}</HostedZoneId><DNSName>#{dns_name}</DNSName></AliasTarget>}
               end
 
-              change_tags = %Q{<Change>#{action_tag}<ResourceRecordSet>#{name_tag}#{type_tag}#{ttl_tag}#{resource_tag}#{alias_target_tag}</ResourceRecordSet></Change>}
+              change_tags = %Q{<Change>#{action_tag}<ResourceRecordSet>#{name_tag}#{type_tag}#{set_identifier_tag}#{weight_tag}#{region_tag}#{ttl_tag}#{resource_tag}#{alias_target_tag}</ResourceRecordSet></Change>}
               changes += change_tags
             end
 
             changes += '</Changes></ChangeBatch>'
           end
 
-          body = %Q{<?xml version="1.0" encoding="UTF-8"?><ChangeResourceRecordSetsRequest xmlns="https://route53.amazonaws.com/doc/2011-05-05/">#{changes}</ChangeResourceRecordSetsRequest>}
+
+          body = %Q{<?xml version="1.0" encoding="UTF-8"?><ChangeResourceRecordSetsRequest xmlns="https://route53.amazonaws.com/doc/#{@version}/">#{changes}</ChangeResourceRecordSetsRequest>}
           request({
             :body       => body,
             :parser     => Fog::Parsers::DNS::AWS::ChangeResourceRecordSets.new,

lib/fog/aws/requests/dns/create_hosted_zone.rb

@@ -44,7 +44,7 @@ module Fog
           end
 
           request({
-            :body    => %Q{<?xml version="1.0" encoding="UTF-8"?><CreateHostedZoneRequest xmlns="https://route53.amazonaws.com/doc/2011-05-05/"><Name>#{name}</Name>#{optional_tags}</CreateHostedZoneRequest>},
+            :body    => %Q{<?xml version="1.0" encoding="UTF-8"?><CreateHostedZoneRequest xmlns="https://route53.amazonaws.com/doc/#{@version}/"><Name>#{name}</Name>#{optional_tags}</CreateHostedZoneRequest>},
             :parser  => Fog::Parsers::DNS::AWS::CreateHostedZone.new,
             :expects => 201,
             :method  => 'POST',