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

Gerrit User 22290 c5efc97b6c Update patch set 1 ... Patch-set: 1		2019-09-25 11:41:25 +00:00
33e89ab6d61c2c4b105feb95ed9587b775e3f27b	Update patch set 2	2019-09-24 04:21:28 +00:00
e31c41d50b6c49e7fdb8b5ed6b4cc1fd97cfa6be	Update patch set 1	2019-09-25 11:41:25 +00:00