[hp|compute] Consolidate the simple mapped options parameters in the create server call.

lib/fog/hp/requests/compute/create_server.rb

@@ -91,10 +91,6 @@ module Fog
             end
           end
 
-          if options['user_data']
-            data['server']['user_data'] = options['user_data']
-          end
-
           request(
             :body     => Fog::JSON.encode(data),
             :expects  => 202,