Fix config typo in load tests.

tools/swarming_load_test_bot.py

 #!/usr/bin/env python
 # Copyright 2013 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.
 
 """Triggers a ton of fake jobs to test its handling under high load.
 
 Generates an histogram with the latencies to process the tasks and number of
 retries.
 """
@@ skipping 17 matching lines @@
 
 from third_party import colorama
 
 from utils import graph
 from utils import net
 from utils import threading_utils
 
 # Line too long (NN/80)
 # pylint: disable=C0301
 
-
+OS_NAME = 'Comodore64'
 TASK_OUTPUT = 'This task ran with great success'
 
 
 def print_results(results, columns, buckets):
   delays = [i for i in results if isinstance(i, float)]
   failures = [i for i in results if not isinstance(i, float)]
 
   print('%sDELAYS%s:' % (colorama.Fore.RED, colorama.Fore.RESET))
   graph.print_histogram(
       graph.generate_histogram(delays, buckets), columns, ' %.3f')
@@ skipping 61 matching lines @@
     # and
     # https://chromium.googlesource.com/chromium/tools/build.git/ \
     #    +/master/scripts/tools/swarm_bootstrap/swarm_bootstrap.py
     # for more details.
     self._attributes = {
       'dimensions': {
         # Use improbable values to reduce the chance of interferring with real
         # slaves.
         'bits': '36',
         'machine': os.uname()[4] + '-experimental',
-        'os': ['Comodore64'],
+        'os': [OS_NAME],
       },
       'id': self._machine_id,
       'try_count': 0,
       'tag': self._machine_id,
       'version': swarm_bot_hash,
     }
 
     self._thread = threading.Thread(target=self._run, name='bot%d' % index)
     self._thread.daemon = True
     self._thread.start()
@@ skipping 186 matching lines @@
   results = events.queue
   print_results(results, options.columns, options.buckets)
   if options.dump:
     with open(options.dump, 'w') as f:
       json.dump(results, f, separators=(',',':'))
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())