Rework the config to use runit logging.

workers/diffsworker.py

@@ -33,16 +33,7 @@ class DiffsWorker(Worker):
 
     return True
 
-parser = argparse.ArgumentParser(description='Worker daemon to compute diffs')
-parser.add_argument('--log', help='Specify the log file for the worker as a daemon.')
-args = parser.parse_args()
-
-if args.log is not None:
-  handler = logging.FileHandler(args.log)
-else:
-  handler = logging.StreamHandler()
-handler.setFormatter(formatter)
-root_logger.addHandler(handler)
+logging.config.fileConfig('conf/logging.conf', disable_existing_loggers=False)  
 
 worker = DiffsWorker(image_diff_queue)
-worker.start()
+worker.start()