[sig][upgrades] IRC meeting minutes 15th April 2019 @ 0900 UTC

Hi All Minutes from this mornings Upgrades SIG meeting: http://eavesdrop.openstack.org/meetings/upgrades_sig/2019/upgrades_sig.2019-... One question was asked about longer term running of mixed version clouds, which although not ideal might be a reality due to management of change slots for upgrades etc... If anyone has experience of this situation it would be nice to share! Reminder that the second Upgrades SIG IRC meeting is scheduled for 1600 UTC today, covering those in US timezones. Thanks James