RE-1267 Disable artifacts for new release PR
RE-1267 Disable artifacts for new release PR

When doing a PR for a new release, the artifacts do not yet exist
and therefore cannot be used. This patch implements a check in
the PR script which disables artifacting if it detects that apt
artifacts for the current release are not available.

jacobwagner/rpc-openstack,rcbops/rpc-openstack,hughsaunders/rpc-openstack,hughsaunders/rpc-openstack,BjoernT/rpc-openstack,robb-romans/rpc-openstack,rcbops/rpc-openstack,prometheanfire/rpc-openstack,prometheanfire/rpc-openstack,jacobwagner/rpc-openstack,cloudnull/rpc-openstack,BjoernT/rpc-openstack,robb-romans/rpc-openstack,cloudnull/rpc-openstack