make version of ts_mon compatible with appengine

infra_libs/ts_mon/common/test/targets_test.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import unittest
 
-from monacq.proto import metrics_pb2
-
-from infra_libs.ts_mon import targets
+try:
+  from monacq.proto import metrics_pb2
+  from infra_libs.ts_mon.common import targets
+except ImportError:
+  from proto import metrics_pb2
+  from common import targets
 
 
 class DeviceTargetTest(unittest.TestCase):
 
   def test_populate_target(self):
     pb = metrics_pb2.MetricsData()
     t = targets.DeviceTarget('reg', 'net', 'host')
     t._populate_target_pb(pb)
     self.assertEquals(pb.network_device.metro, 'reg')
     self.assertEquals(pb.network_device.hostgroup, 'net')
     self.assertEquals(pb.network_device.hostname, 'host')
     self.assertEquals(pb.network_device.realm, 'ACQ_CHROME')
     self.assertEquals(pb.network_device.alertable, True)
 
 
 class TaskTargetTest(unittest.TestCase):
 
   def test_populate_target(self):
     pb = metrics_pb2.MetricsData()
     t = targets.TaskTarget('serv', 'job', 'reg', 'host')
     t._populate_target_pb(pb)
     self.assertEquals(pb.task.service_name, 'serv')
     self.assertEquals(pb.task.job_name, 'job')
     self.assertEquals(pb.task.data_center, 'reg')
     self.assertEquals(pb.task.host_name, 'host')
     self.assertEquals(pb.task.task_num, 0)