Log the name of the engine used when verbose.
Log the name of the engine used when verbose.

mrkwse/memcached,zbase/memcached,mrkwse/memcached,couchbase/memcached,daverigby/kv_engine,zbase/memcached,jimwwalker/memcached,Metaswitch/memcached,cloudrain21/memcached-1,daverigby/memcached,zbase/memcached,Metaswitch/memcached,abhinavdangeti/memcached,couchbase/memcached,abhinavdangeti/memcached,Metaswitch/memcached,owendCB/memcached,abhinavdangeti/memcached,cloudrain21/memcached-1,zbase/memcached,abhinavdangeti/memcached,daverigby/memcached,abhinavdangeti/memcached,owendCB/memcached,owendCB/memcached,owendCB/memcached,daverigby/kv_engine,mrkwse/memcached,jimwwalker/memcached,couchbase/memcached,jimwwalker/memcached,daverigby/memcached,daverigby/kv_engine,zbase/memcached,Metaswitch/memcached,Metaswitch/memcached,couchbase/memcached,daverigby/kv_engine,daverigby/memcached,mrkwse/memcached,cloudrain21/memcached-1,cloudrain21/memcached-1