Don't call config() in the global space

Calling `config` in the global space breaks the config generator.
There's another case like this in the wsgi transport but it's not loaded
as part of the config generation step.

Change-Id: If4bccf54e89994c665bb1d5f4f0766e7b7f16c6d

zaqar/bench/conductor.py

@@ -23,6 +23,8 @@ from zaqar.bench import producer
 
 
 def main():
+    conf(project='zaqar', prog='zaqar-benchmark')
+
     downstream_queue = mp.Queue()
     procs = [mp.Process(target=worker.run, args=(downstream_queue,))
              for worker in [producer, consumer]]

zaqar/bench/config.py

@@ -33,4 +33,3 @@ _CLI_OPTIONS = (
     cfg.StrOpt('messages_path', short='m')
 )
 conf.register_cli_opts(_CLI_OPTIONS)
-conf(project='zaqar', prog='zaqar-benchmark')