Update couchbase-cli for commit validation.

Change-Id: Ie8fa95d78a6ff048112651e1b7a8379f30b3ee89
Reviewed-on: http://review.couchbase.org/33271
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>