Add the debug_log file to setup_logging

The debug_log file from the configuration was not being passed
to the setup_logging function. Causing no logs to be written
to to the log file.

This change, passes it file path to setup_logging.

Change-Id: Id84a6efdbd7ced98cb7774d09cf7068f988bf16e

turbo_hipster/worker_server.py

@@ -42,7 +42,7 @@ class Server(threading.Thread):
 
         # Python logging output file.
         self.debug_log = self.config['debug_log']
-        self.setup_logging()
+        self.setup_logging(self.debug_log)
 
         # Config init
         self.zuul_manager = None