[aws|beanstalk] Update parser for DescribeEnvironmentResources

Updated parser to handle both new and "legacy" beanstalk stacks.
Updated Environment#load_balancer to return correct result for both
stack types.

lib/fog/aws/models/beanstalk/environment.rb

@@ -47,8 +47,12 @@ module Fog
 
         # Returns the load balancer object associated with the environment.
         def load_balancer(elb_connection = Fog::AWS[:elb])
-          requires :resources
-          elb_connection.load_balancers.get(resources['LoadBalancer']['LoadBalancerName'])
+
+          if resources.nil?
+            elb_connection.load_balancers.get(live_resources['LoadBalancers'].first['Name'])
+          else
+            elb_connection.load_balancers.get(resources['LoadBalancer']['LoadBalancerName'])
+          end
         end
 
         # Return events related to this version

lib/fog/aws/parsers/beanstalk/describe_environment_resources.rb

@@ -16,6 +16,17 @@ module Fog
             tag 'Id', :string
             tag 'LaunchConfigurations', :object, :list
             tag 'LoadBalancers', :object, :list
+            tag 'Resources', :object, :list
+            tag 'Description', :string
+            tag 'LogicalResourceId', :string
+            tag 'PhysicalResourceId', :string
+            tag 'Type', :string
+            tag 'Properties', :object, :list
+            tag 'RuntimeSources', :object, :list
+            tag 'Parameter', :string
+            tag 'Versions', :object, :list
+            tag 'ApplicationName', :string
+            tag 'VersionLabel', :string
             tag 'Triggers', :object, :list
           end