Last tag was created more than 2 years ago since
then master have included couple of features and
bug fixes. It would be good to get a tag release
for current master and also a stable/2.0 to backport
fixes into it.
Add stable-branch-type: upstream to allow
naming scheme apart from openstack release names.
Also add seperate release type for openstack-virtual-baremetal
as it's not publishing other pypi or tarball artifacts.
Change-Id: Ia8c9c5e8ad577f6ec1796591e77fddaffa62f008