AMBARI-2400. ambari-agent unit test failure in trunk. (Dmitry Sen via mahadev)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1494014 13f79535-47bb-0310-9956-ffa450edef68

ambari-agent/src/test/python/TestController.py

@@ -25,7 +25,7 @@ import unittest
 from ambari_agent import Controller, ActionQueue
 from ambari_agent import hostname
 import sys
-from mock.mock import patch, MagicMock, call
+from mock.mock import patch, MagicMock, call, Mock
 import logging
 
 class TestController(unittest.TestCase):