Make backward-forward compatible version.

appengine/swarming/server/task_request_test.py

 #!/usr/bin/env python
 # 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.
 
 import datetime
 import logging
 import random
 import sys
 import unittest
@@ skipping 70 matching lines @@
       u'pool': u'default',
     },
     'env': {u'foo': u'bar', u'joe': u'2'},
     'execution_timeout_secs': 30,
     'grace_period_secs': 30,
     'idempotent': False,
     'inputs_ref': inputs_ref,
     'io_timeout_secs': None,
     'has_secret_bytes': 'secret_bytes' in kwargs,
   })
+  properties['dimensions_dict'] = properties.pop('dimensions')
   now = utils.utcnow()
   args = {
     'created_ts': now,
     'name': 'Request name',
     'priority': 50,
     'properties': properties,
     'expiration_ts': now + datetime.timedelta(seconds=30),
     'tags': [u'tag:1'],
     'user': 'Jesus',
   }
@@ skipping 641 matching lines @@
     with self.assertRaises(datastore_errors.BadValueError):
       task_request.SecretBytes(secret_bytes='a'*(20*1024+1)).put()
 
 
 if __name__ == '__main__':
   if '-v' in sys.argv:
     unittest.TestCase.maxDiff = None
   logging.basicConfig(
       level=logging.DEBUG if '-v' in sys.argv else logging.ERROR)
   unittest.main()