Disable memcached's cachedump

To prevent users walking the memcached keys, Add "-X"
to memcached in both containerized and puppet memcached
overcloud services.

Change-Id: I50eefdbdf7a7911f2ba6a7f3b4e739b8e67a7c1c
Partial-Bug: #1738835

docker/services/memcached.yaml

@@ -101,7 +101,7 @@ outputs:
             # will be removed from the $OPTIONS, which is done via the puppet
             # module, but we'll only be able to do this once the following pull
             # request merges: https://github.com/saz/puppet-memcached/pull/88
-            command: ['/bin/bash', '-c', 'source /etc/sysconfig/memcached; /usr/bin/memcached -p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} $OPTIONS >> /var/log/memcached.log 2>&1']
+            command: ['/bin/bash', '-c', 'source /etc/sysconfig/memcached; /usr/bin/memcached -p ${PORT} -u ${USER} -m ${CACHESIZE} -c ${MAXCONN} -X $OPTIONS >> /var/log/memcached.log 2>&1']
       host_prep_tasks:
         - name: create persistent logs directory
           file:

puppet/services/memcached.yaml

@@ -79,6 +79,7 @@ outputs:
                 - service_debug
                 - 'v'
                 - ''
+        memcached::disable_cachedump: true
         tripleo.memcached.firewall_rules:
           '121 memcached':
             dport: 11211