Alerting: No longer index state history log streams by instance labels (#65474)
* Remove private labels
* No longer index by instance labels
* Labels are now invariant, only build them once
* Remove bucketing since everything is in a single stream
* Refactor statesToStreams to only return a single unified log stream
* Don't query on labels that no longer exist
* Move selector logic to loki layer, genericize client to work in terms of straight logQL
* Add support for line-level label filters in query
* Combine existing selector tests for better parallelism
* Tests for logQL construction
* Underscore instead of dot for unwrapping labels in logql
(cherry picked from commit a416100abc)
Alexander Weaver
3bf0352fbb