Ruler: backend local support glob format for rules path about mimir HOT 2 OPEN

thanks for opening the issue. The proposal makes sense to me (as we discussed in the #mimir Slack channel). I'm copying my response here as well

do we want mimir to feel more like prometheus or do we want to be more useful and less predictable at times
I’d say I’m ok with adding more globs to the ruler’s support. You mentioned Thanos supports this too.

I think we don't have the consistency problem that prometheus does. In addition to that, more supported globs is not a breaking change and does not change the compatibility (more likeness than compatibility) with prometheus config

from mimir.

As you said you're open to implementing it, if we don't hear any objections in the next few days I think it's ok to start working on this

from mimir.