update private key format

Author: max-zilla

pyclowder/connectors.py

@@ -647,7 +647,7 @@ def __init__(self, extractor_name, extractor_info,
             self.rabbitmq_queue = rabbitmq_queue
         self.extractor_key = extractor_key
         if extractor_key is not None:
-            self.rabbitmq_queue += ".UK__" + extractor_key
+            self.rabbitmq_queue = "private.%s.%s" % (extractor_key, self.rabbitmq_queue)
         self.channel = None
         self.connection = None
         self.consumer_tag = None