OC4: mount webui redis config into container

Earlier the default redis configuration was used;
now that redis is protected with password by default
configuration file has to be generated.

PROD-26143
PROD-22096

Change-Id: I8ece6db205715ac75423d033d5f30ef7f2c720ea
(cherry picked from commit a5610b2e5e29d3ab2bbc10a051cae2abeb8dafb0)
diff --git a/opencontrail/control/cluster4_0.yml b/opencontrail/control/cluster4_0.yml
index 21d27f7..95b0d90 100644
--- a/opencontrail/control/cluster4_0.yml
+++ b/opencontrail/control/cluster4_0.yml
@@ -151,6 +151,7 @@
               container_name: ${_param:opencontrail_controller_container_name}
               volumes:
                 - /etc/contrail:/etc/contrail
+                - /etc/redis/redis_webui.conf:/etc/redis/redis.conf
                 - /var/lib/configdb:/var/lib/cassandra
                 - /var/lib/config_zookeeper_data:/var/lib/zookeeper
                 - /var/lib/zookeeper/myid:/var/lib/zookeeper/myid