Topology Service is configured in GitLab Rails
## Proposal
Topology Service needs to be added to [`config/gitlab.yml`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/gitlab.yml.example#L27):
```yaml
topology_service:
address: topology-service.runway.gitlab.net:443
ca: /path/to/ca.pem
certificate: /path/to/certificate.pem
private_key: /path/to/certificate.key
cell:
name: cell-100
address: cell-100.gitlab.com
```
> It uses a path to certificates as we decided to secure it with mTLS.
issue