Fixed redis image to use the one Openshift offers locally.

templates/discourse-cern.yaml

@@ -302,7 +302,7 @@ objects:
           deploymentconfig: redis
       spec:
         containers:
-        - image: centos/redis-32-centos7
+        - image: '172.30.78.46:5000/openshift/redis:3.2'
           imagePullPolicy: Always
           name: redis
           ports: