Run upgrade tests in PR/mergequeue CI

[gartnera]

It seems like it's been very easy to break the upgrade tests. We need to run the upgrade tests in PR/mergequeue CI.

[lumtis]

Maybe we could add admin-test and upgrade-test in the merge queue and add two labels skip-admin-test and skip-upgrade-test to skip those?

These tests takes pretty long time, we shouldn't be blocked by these when changing updating a comment for example