Fix command names!

The textual version of some command had an CMD_ prefix..

Change-Id: I11b394aba927dbbd3988b06bb6cdcafc052d74b6
Reviewed-on: http://review.couchbase.org/41280
Reviewed-by: Dave Rigby <daver@couchbase.com>
Tested-by: Trond Norbye <trond.norbye@gmail.com>