Fix the ImportError when using pip install

Change-Id: Ia68e65f10d2f394d53b50ec0217fe6c2a2a1a623

kloudbuster/kb_runner_base.py

@@ -88,7 +88,7 @@ class KBRunner(object):
                 continue
             break
         if not success:
-            LOG.error("Error: Cannot connect to the Redis server")
+            LOG.error("Cannot connect to the Redis server.")
             raise KBProxyConnectionException()
 
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requirements.txt

@@ -14,6 +14,7 @@ oslo.log>=1.0.0
 pecan>=0.9.0
 redis>=2.10.3
 tabulate>=0.7.3
+pytz>=2016.4
 
 # Workaround for pip install failed on RHEL/CentOS
 functools32>=3.2.3