- Refactor geo_node_status so that it gathers metrics
  automatically
- Add specs that iterate over replicable classes with
  generated metrics
- Add `checksummed` traits to tf states
- Update framework docs to reflect changes
- Update sidekiq metrics docs to remove `_count` from
  geo fields in prometheus
- Generate the metrics in the geo_node_statuses factory

Relates to https://gitlab.com/gitlab-org/gitlab/issues/228918