RFE: being able to mark mirrors up to date only on specific categories

[nirik]

See: https://pagure.io/fedora-infrastructure/issue/12125

Basically it would be nice if the crawler could notice when a mirror has a category thats up to date vs others that are not instead of keeping the entire mirror available, but with some categories up to date and others not at all.

Of course we can't easily tell if a mirror has everything for a category, but being able to say a mirror is up to date for say EPEL, but not for Fedora would be helpful.

[triatic]

Thank you for filing! I have noticed the mirror that prompted this suggestion is once again exhibiting the missing category.

A couple of pictures to illustrate the issue: