Changing license header, again!

appengine/gce-backend/instance_group_managers_test.py

 #!/usr/bin/python
 # Copyright 2016 The LUCI 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.
+# Use of this source code is governed under the Apache License, Version 2.0
+# that can be found in the LICENSE file.
 
 """Unit tests for instance_group_managers.py."""
 
 import unittest
 
 import test_env
 test_env.setup_test_env()
 
 from google.appengine.ext import ndb
 
@@ skipping 557 matching lines @@
     models.InstanceGroupManager(key=key, url='url').put()
     expected_url = 'url'
 
     instance_group_managers.schedule_creation()
 
     self.assertEqual(key.get().url, expected_url)
 
 
 if __name__ == '__main__':
   unittest.main()