Opening this question from Cloud SIG as a bz as requested from https://pagure.io/centos-infra/issue/513

In different talks from CentOS Stream, it has been mentioned a future mechanism to add custom jobs to composes gating CI. For SIGs, that'd be very useful as a way to provide early feedback on potential issues with centos updates even if those jobs are only for reporting purposes and not blocking composes promotion.

In my case, i'd be interested in running OpenStack jobs to validate we keep working with newer composes.

The purpose of this ticket is to track the status of this work in centos infra, if there is already a mechanism to implement this or if there are plants to provide one.