Please write a test plan for testing MTV upgrade.

Before running upgrade need to have migration CRs that should be kept and stay valid after the upgrade.

Please check if MTV-2.0 installation is possible on OCP-4.8/CNV-4.8 - If test upgrade based on it.

• • By this bug it seems that is will not work: Bug 1977657 - [MTV] Published route after install goes into rewrite loop showing certificate errors

Aug 26 - Update
Test case #1 - Upgrade MTV on OCP 4.8 and check MTV data --> Passed.
MTV was upgraded from 2.0.0-24 to 2.1.0-34 (mtv-operator-bundle-container)

Test case #2 - Upgrade OCP,CNV,MTV and check MTV data --> Passed.
OCP was upgraded from 4.7.23 to 4.8.4
CNV was upgraded from 2.6.6 to 4.8.1-17
MTV was upgraded from 2.0.0-24 to 2.1.0-44

Test case #3 - Upgrade MTV using Stage catalog source on OCP4.8, and check MTV data
MTV was upgraded from MTV 2.0.0 stage version to MTV 2.1.0-53 stage version
 
Test case #4 - Upgrade released MTV2.0 version to released MTV2.1
Was tested post MTV 2.1 GA
MTV was upgraded from MTV 2.0.0 GA to MTV 2.1.0 GA

The test plan and results are documented here:
https://docs.google.com/spreadsheets/d/1aonS7OzyKiHVVtPK5q2qyT15ArHtqp6ZYGAeshi2qMg/edit#gid=1924492146&range=7:7