Transactionally record error- and apdex rates for aggregation sets (again)

We ran this last week and caused impact to prometheus. This is the same general codebase but with only web and gitaly metrics set up.

Merge branch 'bvl/transactional-rate-recordings' into 'master'

Transactionally record error- and apdex rates for aggregation sets

See merge request !6243 (merged)

Merged-by: Bob Van Landuyt bob@gitlab.com Approved-by: Stephanie Jackson stejacks@gitlab.com

(cherry picked from commit cfe183af)

da3cc3c4 Record transactional rates in aggregation set transformations 169a5756 Record transactional rates from source metrics ba04090d Allow generating rule files in nested directories 3f66e4aa [Thanos-staging] Transactional rates from source metrics 563a6937 [Thanos-staging] Record global aggregations with transactional rates