Comment 11 for bug 1636472

Verified on 9.2 snapshot #567.

Steps to verify:
1. Deploy Fuel 9.0 RC2 from image (Build 495)
2. Upgrade the fuel master node to 9.2
3. Change operator_user's name value from 'fueladmin' to 'root' and operator_user's homedir value from '/home/fueladmin' to '/root' in /usr/lib/python2.7/site-packages/nailgun/fixtures/openstack.yaml
4. systemctl restart nailgun
5. Apply workaround for bug https://bugs.launchpad.net/fuel/+bug/1651416 (changes in openstack.yaml are not applied after upgrade to 9.2 by default, we need to set name and homedir values manually in db):
sudo -u postgres psql
\c nailgun
begin;
update releases set attributes_metadata = regexp_replace(attributes_metadata, '"value": "fueladmin"', '"value": "root"');
update releases set attributes_metadata = regexp_replace(attributes_metadata, '"value": "\/home\/fueladmin"', '"value": "/root"');
commit;
6. Create cluster with 1 controller, add mos9.0-proposed repo and deploy it

Actual results:
Deployment is finished successfully.