[keystone] Team dinner in Denver

Berlin feels like it was ages ago, so let's organize a team dinner in Denver. Poll here: https://framadate.org/BHNNU9S3f9N3lasH If you have strong feelings or even mild inclinations about where to go, please comment on the poll or in the brainstorming etherpad[1] because otherwise I am pretty much just going to throw a dart. Colleen [1] https://etherpad.openstack.org/p/DEN-keystone-forum-sessions