[sig][upgrades] 2019 reboot/irc meeting on Monday

Hi All During the PTG in Denver we agreed to move the Upgrades SIG IRC meeting to a 4 week cadence. I completed the re-scheduling shortly after the PTG, but we've failed to actually hold a meeting to date! The next scheduled meetings are 0900 and 1600 UTC this coming Monday; we'll go with the standing agenda that we had before: https://etherpad.openstack.org/p/upgrades-sig-meeting Have a great weekend and look forward to chatting with interested parties on Monday! Cheers James