Add FORCE_BUILD parameter to server_buildbot_trigger.sh
Change-Id: I1cc17f9e284640b9ef5628a7eb6253d4fb3ec76f
Reviewed-on: http://review.couchbase.org/38135
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>