vcloud tasks can optionaly contain a link for cancel it and an error element

lib/fog/terremark/parsers/shared/task.rb

@@ -12,7 +12,7 @@ module Fog
           def start_element(name, attributes)
             super
             case name
-            when 'Owner', 'Result'
+            when 'Owner', 'Result', 'Link', 'Error'
               data = {}
               until attributes.empty?
                 data[attributes.shift] = attributes.shift

lib/fog/vcloud/models/shared/task.rb

@@ -13,15 +13,22 @@ module Fog
         attribute :result,      'Result'
         attribute :start_time,  'startTime'
         attribute :status
+        attribute :link         'Link'
+        attribute :error        'Error'
 
         def initialize(attributes = {})
           new_owner  = attributes.delete('Owner')
           new_result = attributes.delete('Result')
+          new_error = attributes.delete('Error')
+          new_cancel_link = attributes.delete('Link')
+
           super
           @owner  = connection.parse(new_owner)
           if new_result
             @result = connection.parse(new_result)
           end
+          @error = connection.parse(new_error) if new_error
+          @cancel_link = connection.parse(new_cancel_link) if new_cancel_link
         end
 
         def ready?