[API] handle 'warnings' on yaml tests

Author: picandocodigo

api-spec-testing/test_file/action.rb

@@ -71,6 +71,9 @@ def execute(client, test = nil)
             end
           when 'catch'
             client
+          when 'warnings'
+            # TODO warn the users
+            client
           else
             @response = client.send(_method, prepare_arguments(args, test))
             client