MB-15361: Log memcached startup
MB-15361: Log memcached startup

Change-Id: Iaba116e366a5b1efe1f66356ffe42ff70381b942
Reviewed-on: http://review.couchbase.org/52211
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

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