MB-19040 - stats for TotWorkerAuthenticateMemcachedConn
MB-19040 - stats for TotWorkerAuthenticateMemcachedConn

Change-Id: Id39dd67e66613137b031725129c4e870693ec654
Reviewed-on: http://review.couchbase.org/62784
Reviewed-by: Marty Schoch <ba9951d7d66412e2a57aea395f01176a793cf5eb@gmail.com>
Tested-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>

couchbase/go-couchbase