OpenStack host maintenance and upgrade in interaction with application on top of it

Gerrit User 15834 24cf45ce5b Create change ... Uploaded patch set 1. Patch-set: 1 Change-id: I617b5a4c62360d02d6f67b1fe671e0ed301f21d1 Subject: bug: fix upper constraints url Branch: refs/heads/master Commit: 1dfd5dd16d Groups: 1dfd5dd16d		2019-05-01 00:08:27 +00:00