Turn on Mimir alerting to EOC
We need to turn on and/or install appropriate alerts to the EOC for Mimir.
For the first pass, likely creating apdex and error rate alerts would be adequate.
That's done by shifting https://gitlab.com/gitlab-com/runbooks/-/blob/master/metrics-catalog/services/mimir.jsonnet?ref_type=heads#L150 to true for appropriate services.
Opening this issue for discussions of anything else we want to immediately turn on.
Edited by Stephanie Jackson