[JEP-230] Proactively block instance-identity 3.1

[jglick]

Want to be able to release jenkinsci/instance-identity-plugin#22 without it appearing on the UC, at least for now. Same as in #487.

(I am not sure I have permission to release by the way? Says @core but I am not sure if I am in that group or not. How would I check? Recently I have been using JEP-229 exclusively for releases, which I could do here but it would be tricky since I need to predict the version number in advance.)

@timja

[daniel-beck]

(I am not sure I have permission to release by the way? Says @core but I am not sure if I am in that group or not. How would I check?

Team definitions are in https://github.com/jenkins-infra/repository-permissions-updater/tree/master/teams

For all actually published plugins, their page on plugins.jenkins.io lists maintainers in the sidebar (usually a few hours out of date at most), we're no longer using the pom.xml for that information.

[jglick]

https://github.com/jenkins-infra/repository-permissions-updater/blob/088c793cdaf26fe14c1ac6a6a2d2e2c82e81a59d/teams/core.yml#L9 OK thanks.

[timja]

It's a list of all active core maintainers basically, but any core maintainer can PR to be in there.