swarming: add transaction_id to tasks.new request

appengine/swarming/test_env_handlers.py

 # coding: utf-8
 # Copyright 2014 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Base class for handlers_*_test.py"""
 
 import base64
 import json
 import os
@@ skipping 245 matching lines @@
       'properties': props,
       'tags': [],
       'user': 'joe@localhost',
     }
     params.update(kwargs)
 
     # Note that protorpc message constructor accepts dicts for submessages.
     request = swarming_rpcs.NewTaskRequest(**params)
     response = self.endpoint_call(
         handlers_endpoints.SwarmingTasksService, 'new', request)
-    return response, response['task_id']
+    return request, response, response['task_id']
 
   def client_create_task_isolated(self, properties=None, **kwargs):
     properties = (properties or {}).copy()
     properties['inputs_ref'] = {
       'isolated': '0123456789012345678901234567890123456789',
       'isolatedserver': 'http://localhost:1',
       'namespace': 'default-gzip',
     }
     return self._client_create_task(properties, **kwargs)
 
   def client_create_task_raw(self, properties=None, **kwargs):
     """Creates a raw command TaskRequest via the Cloud Endpoints API."""
     properties = (properties or {}).copy()
     properties['command'] = ['python', 'run_test.py']
     return self._client_create_task(properties, **kwargs)
 
   def client_get_results(self, task_id):
     return self.endpoint_call(
         handlers_endpoints.SwarmingTaskService, 'result', {'task_id': task_id})