Ensure there is no redis on host

In the past releases overcloud-full image could contained redis package
even though containerized deployment has been used. This is problematic
during minor update, so we need to make sure the package is removed.

Change-Id: I827dd918bb83c67c6e02a4d91fed2a6959361283

deployment/database/redis-container-puppet.yaml

@@ -229,7 +229,18 @@ outputs:
               Log files from redis containers can be found under
               /var/log/containers/redis.
           ignore_errors: true
-      upgrade_tasks: []
+      update_tasks:
+        - name: Ensure redis is uninstalled on container host
+          when: step|int == 1
+          package:
+            name: redis
+            state: absent
+      upgrade_tasks:
+        - name: Ensure redis is uninstalled on container host
+          when: step|int == 1
+          package:
+            name: redis
+            state: absent
       post_upgrade_tasks:
         - when: step|int == 1
           import_role: