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

Gerrit User 15834 2c147039ec Create change ... Uploaded patch set 1. Patch-set: 1 Change-id: Iaa73dbecd63f3d035cba7799a66c01593224f6c1 Subject: Add more configuration parameters to DevStack Branch: refs/heads/master Commit: 8236fa4f51 Groups: 8236fa4f51		2019-05-31 06:09:16 +00:00