[CBD-1249]: Pass latest build number to smoke test.

Change-Id: I1b934d659f7955739ce72a4bb0d463d28a45423c
Reviewed-on: http://review.couchbase.org/34408
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>