[JIRA] (OVIRT-841) Modify check_merged jobs to run as merge gates instead of post merge

Modify check_merged jobs to run as merge gates instead of post merge -------------------------------------------------------------------- Key: OVIRT-841 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-841 Project: oVirt - virtualization made easy Issue Type: New Feature Components: Jenkins Reporter: Barak Korren Assignee: infra Priority: High This can be done with Zuul - as tracked by OVIRT-734, but can also be done with just Jenkins in the short term. This ticket is to track short-term gate implementation without Zuul, it is separate from the Zuul ticket, because if we do end up deploying Zuul, we will probably have to let it do this too. We need to also communicate with the developers to ask what will the prefer as the way to signal Jenkins to run the gate, there are two options we can consider: # Use code-review+2 # Use some new "approve" flag (Like OpenStack)