scripts/bulkbuild: improve dev-build deployments
scripts/bulkbuild: improve dev-build deployments

Improve deployments for development builds to allow distinguish between
builds without new version number.

Signed-off-by: Jens Rehsack <69d49c504a9219a55b8be0f905e8fe3c32ffb57f@netbsd.org>

rehsack/meta-jens,rehsack/meta-jens,rehsack/meta-jens