chore: connect instances to prometheus

Description

Adds the necessary configuration so that namespaces outside of prometheus and kube-system are monitored.

Supporting information

• https://github.com/prometheus-operator/prometheus-operator/issues/2890
• https://tasks.opencraft.com/browse/SE-5491

Testing instructions

• Apply the changes
• For any instance change the EDX_PLATFORM_VERSION to something that doesn't exist like opencraft-release/maple.10-grove
• Deploy your instance (./grove deploy {instance_name})
• When the instance fails to deploy there will be a KubeJobFailed alert.
  • Port forward the prometheus container: ./kubectl --namespace monitoring port-forward svc/prometheus-operated 9090
  • View the alerts: http://localhost:9090/alerts

Screenshots

Checklist

If any of the items below is not applicable, do not remove them, but put a check in it.

• All providers include the new feature/change
• All affected providers can provision new clusters
• Unit tests are added/updated
• Documentation is added/updated
• The TOOLS_CONTAINER_IMAGE_VERSION in ci_vars.yml is updated
• The grove-template repository is updated