Notify maintainers about problems with Bodhi update

[lachmanfrantisek]

During discussions with the Gnome maintainers (https://github.com/packit/user/issues/18), a feature request appeared to be able to notify package maintainers about situations that require the maintainer's attention, e.g. negative karma, check failed,... but not about "normal" state like update created or positive karma added.

Alternative ideas:

• Fedora notifications
  • There is a way how to configure Fedora notifications via https://notifications.fedoraproject.org/
  • One can filter packages by maintainer/group.
  • There is a topic filtering available, but I am not sure if Bodhi sends negative karma comments to another topic.
• Since this might be a generic feature for any Bodhi user, we can think about the possibility of rather doing this in Bodhi itself.

UX:

• Ideally, do this when Bodhi updates are configured.
• An issue_repository config option might be used.

Implementation:

• This would require parsing new types of messages and a new handler.

[lbarcziova]

Since this might be a generic feature for any Bodhi user, we can think about the possibility of rather doing this in Bodhi itself.

I would probably lean towards this option as it seems more natural to have it there to me.

[lachmanfrantisek]

Asking for opinion/help on Bodhi side: https://github.com/fedora-infra/bodhi/issues/5644