Migrate and merge logging_utils from swarming_bot into client/utils.

appengine/swarming/swarming_bot/bot_main_test.py

 #!/usr/bin/env python
 # Copyright 2013 The Swarming Authors. All rights reserved.
 # Use of this source code is governed by the Apache v2.0 license that can be
 # found in the LICENSE file.
 
 import logging
 import os
 import shutil
 import subprocess
 import sys
 import tempfile
 import time
 import unittest
 
 THIS_FILE = os.path.abspath(__file__)
 
 import test_env
 test_env.setup_test_env()
 
 # Creates a server mock for functions in net.py.
 import net_utils
 
+from utils import logging_utils
 from utils import net
 from utils import zip_package
 import bot
 import bot_config
 import bot_main
-import logging_utils
 import os_utilities
 import xsrf_client
 
 
 # Access to a protected member XX of a client class - pylint: disable=W0212
 
 
 class TestBotMain(net_utils.TestCase):
   def setUp(self):
     super(TestBotMain, self).setUp()
@@ skipping 437 matching lines @@
 
     self.assertEqual(0, bot_main.main([]))
 
 
 if __name__ == '__main__':
   if '-v' in sys.argv:
     unittest.TestCase.maxDiff = None
   logging.basicConfig(
       level=logging.DEBUG if '-v' in sys.argv else logging.CRITICAL)
   unittest.main()