gitlab-exporter
component upgrade test plan
Copy the following test plan to a comment of the merge request that upgrades the component.
## Test plan
- [ ] Check [`gitlab-exporter` project repository](https://gitlab.com/gitlab-org/ruby/gems/gitlab-exporter) for potential breaking changes.
- [ ] Green pipeline with `Trigger:ee-package` and `build-package-on-all-os`.
- [ ] `gitlab-exporter` starts. Run `sudo gitlab-ctl status gitlab-exporter` and check output
to ensure `gitlab-exporter` started successfully.
```shell
sudo gitlab-ctl status gitlab-exporter
```
- [ ] Check exporter version. Run `/opt/gitlab/embedded/bin/gem list gitlab-exporter`
```shell
/opt/gitlab/embedded/bin/gem list gitlab-exporter
```
- [ ] Check that `gitlab-exporter` endpoint can be queried.
```shell
curl --silent "http://localhost:9168/metrics" | head -n5
```
- [ ] Check that Prometheus scrapes `gitlab_exporter_database`, `gitlab_exporter_ruby` and `gitlab_exporter_sidekiq` by poking metrics endpoint.
```shell
curl --silent "http://localhost:9090/metrics" | grep gitlab_exporter
```