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

Gerrit User 22348 7c36fa1f2a Update patch set 8 ... Patch-set: 8 Tag: autogenerated:zuul:gate Reviewer: Gerrit User 22348 <22348@4a232e18-c5a9-48ee-94c0-e04e7cca6543> Label: Verified=+2		2020-02-12 10:04:33 +00:00