[Feature] - /retest option for MCAD-CI

[ChristianZaccaria]

Describe the Bug

When opening a PR in this repo, if the CI fails, the /retest option is not displayed. This is causing developers to have to i.e., add a comment in their code and push changes to their PR to re-trigger the MCAD-CI.

Expected Behavior

If a PR is opened and the CI fails, OpenShift-CI should provide the /retest option.

To discuss

I'm unsure if OpenShift CI already offers this feature in this repo and it's a bug, or if the feature was not added for this repo.