RFC: Bumping the Foreman and Katello to common version

[ekohl]

Today we had a discussion with a few people and I wrote up the summary in a formal RFC, including a lot of implementation details:

Introduction of a new katello-release RPM

Short summary: A new RPM katello-release will be created in the Foreman repo katello-release will obsolete katello-repos katello-release will conflict with foreman-release Background Today we have a foreman-release RPM (like https://yum.theforeman.org/releases/latest/el8/x86_64/foreman-release.rpm) containing the GPG key and yum’s foreman.repo and foreman-plugins.repo. Then there’s a katello-repos RPM (like https://yum.theforeman.org/katello/4.5/katello/el8/x86_64/katello-repos-latest.rpm) w…