[kolla] Ussuri release

Hi, I think it's time we made our Ussuri release. I've been through open bugs and patches to try to work out what are our release blockers. Remember that we can and will follow up with fixes, let's keep it to actual release blockers and release some code for people to use. I've started a list on the whiteboard [1] line 105. Please add items there that you think are release critical. [1] https://etherpad.opendev.org/p/KollaWhiteBoard Thanks, Mark