Update rules priority related to MR labels

Loic Nicollerequested to merge
issues/1221 into main

What does this MR do and why?

Update rules priority related to MR labels.

For MR with both renovate & ci-feature::test-rolling-upgrade labels we want to use the rules defined for ci-feature::test-rolling-upgrade use case in priority otherwise we'll not test the real rolling update.

Related reference(s)

close #1221 (closed)

Test coverage

Merge request reports