[CBD-1191]: Add platform tag and sort by name for dashboard commit validation.

Change-Id: Ifabb2435cb4ed3fe112b38c343118e868ff3cfef
Reviewed-on: http://review.couchbase.org/34365
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>