Comment 5 for bug 1622942

verified on next scenario:
1) deploy 9.0 cluster
2) upgrade cluster and fuel-master to 9.1
3) add 2 controller to cluster
4) deploy changes, net-verify, ostf
5) remove primary controller
6) deploy changes, net-verify, ostf

[root@nailgun ~]# fuel fuel-version
api: '1'
auth_required: true
feature_groups: []
openstack_version: mitaka-9.0
release: '9.0'

[root@nailgun ~]# shotgun2 short-report
cat /etc/fuel_build_id:
 495
cat /etc/fuel_build_number:
 495
cat /etc/fuel_release:
 9.0
cat /etc/fuel_openstack_version:
 mitaka-9.0
rpm -qa | egrep 'fuel|astute|network-checker|nailgun|packetary|shotgun':
 fuel-utils-9.0.0-1.mos8594.noarch
 fuelmenu-9.0.0-1.mos275.noarch
 fuel-nailgun-9.0.0-1.mos8853.noarch
 fuel-library9.0-9.0.0-1.mos8594.noarch
 fuel-9.0.0-1.mos6355.noarch
 shotgun-9.0.0-1.mos90.noarch
 fuel-release-9.0.0-1.mos6355.noarch
 rubygem-astute-9.0.0-1.mos770.noarch
 fuel-setup-9.0.0-1.mos6355.noarch
 fuel-openstack-metadata-9.0.0-1.mos8853.noarch
 network-checker-9.0.0-1.mos74.x86_64
 python-fuelclient-9.0.0-1.mos354.noarch
 fuel-provisioning-scripts-9.0.0-1.mos8853.noarch
 python-packetary-9.0.0-1.mos149.noarch
 fuel-ostf-9.0.0-1.mos944.noarch
 nailgun-mcagents-9.0.0-1.mos770.noarch
 fuel-migrate-9.0.0-1.mos8594.noarch
 fuel-misc-9.0.0-1.mos8594.noarch
 fuel-mirror-9.0.0-1.mos149.noarch
 fuel-notify-9.0.0-1.mos8594.noarch
 fuel-agent-9.0.0-1.mos291.noarch
 fuel-bootstrap-cli-9.0.0-1.mos291.noarch
 fuel-ui-9.0.0-1.mos2814.noarch