We need to measure the adoption of the new group-level integrations
https://gitlab.com/groups/gitlab-org/-/epics/2543.

- Exclude the group-level services from being counted in
  projects_#{service_name}_active.
- New counter groups_#{service_name}_active for active group-level
  integrations.
- New counter groups_inheriting_#{service_name}_active for active group
  integrations inheriting settings.