SW-699: fixed test

LCS/Messaging/python/messaging/test/t_messagebus.py

@@ -24,13 +24,14 @@
 Test program for the module lofar.messaging.messagebus
 """
 
-import re
+import uuid
 import unittest
 import logging
 from datetime import datetime
 
 from lofar.messaging.messages import *
 from lofar.messaging.messagebus import *
+from lofar.messaging.messagebus import create_queue, create_exchange, create_binding, create_bound_queue, delete_exchange, delete_queue
 from lofar.messaging.exceptions import MessageBusError
 from lofar.common.datetimeutils import round_to_millisecond_precision
 from time import sleep