[release][ptl] Holding all release activity

Hey everyone, There have been a rash of Pypi and other issues lately that have led to release job failures. We will be holding off on processing any more releases until we've seen some evidence that things have been resolved. I would guess this means that there will be no releases done until early next week. If you have a critical need for a release, please come talk to us in the #openstack-release channel and we can see if there is anything we can do in the interim. Thanks! Sean