[vcloud_director] Add #put_vm_capabilities.

lib/fog/vcloud_director/compute.rb

@@ -244,6 +244,7 @@ module Fog
       request :put_network_connection_system_section_vapp
       request :put_vapp_metadata_item_metadata
       request :put_vapp_template_metadata_item_metadata
+      request :put_vm_capabilities
 
       class Model < Fog::Model
         def initialize(attrs={})

lib/fog/vcloud_director/requests/compute/put_vm_capabilities.rb

@@ -4,6 +4,8 @@ module Fog
       class Real
         # Update VM's capabilities.
         #
+        # @note The signature of this method is subject to change.
+        #
         # @param [String] id Object identifier of the VM.
         # @param [Hash] options
         # @option options [Boolean] :MemoryHotAddEnabled True if the virtual