Added text output to mark "do-nothing" builds as Unstable

Change-Id: Id61b76a2fc5c2e881c3ac7d591d47541c31c4e65
Reviewed-on: http://review.couchbase.org/34384
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>