Merge branch '41799-managed-prometheus-deployment-install-a-lot-of-extra-stuff' into 'master'
Resolve "Managed Prometheus deployment installs a lot of extra stuff"
Closes #41799
See merge request gitlab-org/gitlab-ce!16378
(cherry picked from commit 5c51cbca)
37d96e7d Use ConfigMap content to populate values.yaml
0a69f490 Fixes suggestions on MR