CBD-1357:  windows 3.0.0 build jobs now jenkins jobs called through buildbot proxy

Change-Id: Ib749860e6814aa16285f0f78c935f52a294799a3
Reviewed-on: http://review.couchbase.org/36299
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>