MB-12837: Explicitly allow client commands
MB-12837: Explicitly allow client commands

Change-Id: Iaa910d78b4585c556e4d59cbaa4e98705761e7c9
Reviewed-on: http://review.couchbase.org/43901
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

daverigby/memcached,cloudrain21/memcached-1,mrkwse/memcached,couchbase/memcached,couchbase/memcached,mrkwse/memcached,owendCB/memcached,daverigby/kv_engine,daverigby/kv_engine,couchbase/memcached,daverigby/memcached,cloudrain21/memcached-1,couchbase/memcached,daverigby/memcached,owendCB/memcached,cloudrain21/memcached-1,owendCB/memcached,daverigby/kv_engine,mrkwse/memcached,cloudrain21/memcached-1,owendCB/memcached,daverigby/kv_engine,mrkwse/memcached,daverigby/memcached