CBD-1349: Add testrunner jenkins job.

Change-Id: I23849767cdbbf0617d3f63a60dc90ef95d89ab7c
Reviewed-on: http://review.couchbase.org/35945
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Tested-by: Eric Limare <eric.limare@couchbase.com>