Updating Fuel Master from 9.0 to 9.1 does not update version information.

[Javier Diaz Jr]

Detailed bug description:

Deployed Fuel 9.0 based Fuel Master and followed the procedure listed here:

https://docs.mirantis.com/openstack/fuel/fuel-9.1/release-notes/update-product/update-master-9-9-1.html

The Fuel Master was successfully updated to MOS 9.1 after the procedure was completed. Confirmed via package versions. However, after executing either of the following commands: fuel --version, fuel fuel-version, fuel2 fuel-version I still get incorrect output. Specifically, I see 9.0 as opposed to 9.1:

[root@fuel ~]# fuel2 fuel-version
api: '1'
auth_required: true
feature_groups: []
openstack_version: mitaka-9.0
release: '9.0'
[root@fuel ~]# rpm -qa | grep fuel
fuel-library9.0-9.0.0-1.mos8606.noarch
fuel-setup-9.0.0-1.mos6357.noarch
fuel-ostf-9.0.0-1.mos946.noarch
fuelmenu-9.0.0-1.mos275.noarch
fuel-bootstrap-cli-9.0.0-1.mos291.noarch
fuel-utils-9.0.0-1.mos8607.noarch
fuel-agent-9.0.0-1.mos291.noarch
fuel-openstack-metadata-9.0.0-1.mos8861.noarch
fuel-nailgun-9.0.0-1.mos8861.noarch
fuel-notify-9.0.0-1.mos8607.noarch
fuel-release-9.0.0-1.mos6357.noarch
fuel-misc-9.0.0-1.mos8607.noarch
fuel-mirror-9.0.0-1.mos154.noarch
fuel-9.0.0-1.mos6357.noarch
python-fuelclient-9.0.0-1.mos356.noarch
fuel-provisioning-scripts-9.0.0-1.mos8861.noarch
fuel-ui-9.0.0-1.mos2814.noarch
fuel-migrate-9.0.0-1.mos8607.noarch

Steps to reproduce:

1. Deploy Fuel 9.0 Fuel Master.
2. Use update procedures in docs (link above).
3. Check fuel version (i.e. fuel2 fuel-version)
4. Still says 9.0, not 9.1

Expected results:

api: '1'
auth_required: true
feature_groups: []
openstack_version: mitaka-9.1
release: '9.1'

Actual result:

api: '1'
auth_required: true
feature_groups: []
openstack_version: mitaka-9.0
release: '9.0'

Reproducibility:
 Tested twice, 100% reproducibility.

Workaround:
Update version files post installation perhaps.
Impact:
No major impact. Simply confusing.
Description of the environment:
 Operation system: CentOS 7
 Versions of components: Fuel 9.0 and 9.1