Add executeion of memcached state for prx node

Change-Id: I20b07c72bf27518f8ee47e85147fcaea2a58ae5e
Closes: # PROD-12447
diff --git a/openstack-control-upgrade.groovy b/openstack-control-upgrade.groovy
index c5219d8..1dfc4cb 100644
--- a/openstack-control-upgrade.groovy
+++ b/openstack-control-upgrade.groovy
@@ -449,6 +449,8 @@
                     salt.enforceState(saltMaster, 'prx*', 'horizon')
                     // salt 'prx*' state.sls nginx
                     salt.enforceState(saltMaster, 'prx*', 'nginx')
+                    // salt "prx*" state.sls memcached
+                    salt.enforceState(saltMaster, 'prx*', 'memcached')
 
                     try {
                         salt.enforceHighstate(saltMaster, 'ctl*')