CBD-1217:  change repo build job labels, add TIMEZONE to jenkins job time

Change-Id: I730360a591e224800b2e07efeaa1925f4f75f594
Reviewed-on: http://review.couchbase.org/33278
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>