Changing license header, again!

appengine/swarming/swarming_bot/bot_code/task_runner.py

 # Copyright 2013 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.
 
 """Runs a Swarming task.
 
 Downloads all the necessary files to run the task, executes the command and
 streams results back to the Swarming server.
 
 The process exit code is 0 when the task was executed, even if the task itself
 failed. If there's any failure in the setup or teardown, like invalid packet
 response, failure to contact the server, etc, a non zero exit code is used. It's
 up to the calling process (bot_main.py) to signal that there was an internal
@@ skipping 516 matching lines @@
   if options.start > now:
     options.start = now
 
   try:
     load_and_run(
         options.in_file, options.swarming_server, options.cost_usd_hour,
         options.start, options.out_file, options.min_free_space)
     return 0
   finally:
     logging.info('quitting')