Investigate lifecycle stale and rotten etc

[tomhobson]

This was working in 2021, but we need to investigate how and where.

This is an issue to track this and log any things we have found.

[tomhobson]

it worked like
/lifecycle stale

but did it automatically

[msvticket]

I don't see any direct support for this in lighthouse. But I see this file:

https://github.com/jenkins-x/lighthouse/blob/master/pkg/config/test_data/config/jobs/kubernetes/test-infra/fejta-bot-periodics.yaml

It seems to be used still in the Kubernetes project:

https://github.com/kubernetes/test-infra/blob/master/config/jobs/kubernetes/sig-k8s-infra/trusted/sig-contribex-k8s-triage-robot.yaml

The bot just adds the comment, say /lifecycle stale, and then lighthouse would add label to/close the PR. (Which doesn't require any permissison.)

I'd say that just creating a cronjob that use gcr.io/k8s-staging-test-infra/commenter should work fine. But what was used back in the day for Jenkins X, that I don't know.