How to categorize this issue?

/area monitoring
/kind enhancement

What would you like to be added:

Requires #6318 as a prerequisite

Goal: Replace the Prometheus in each control plane with a Prometheus object from the prometheus-operator.

• Replace Prometheus artifacts from the seed-monitoring charts with a component.
• Add temporary migration code for the Persistent volume. This ensures that no data is lost.
  1. Find the "old" pvc and its pv and set persistentVolumeReclaimPolicy=Retain.
  2. Delete the "old" pvc.
  3. Create a Prometheus Object with a volumeClaimTemplate that references the pv with volumeName=<existing-pv>
  4. Migrate the data using an init container
  5. Remove the migration code after 1-2 releases
• Add all existing prometheus configuration to an additionalScrapeConfig. This will allow us to switch to the prometheus-operator without creating PodMonitors and ServiceMonitors for each component and instead do that migration step by step.
• Add all extension prometheus configuration to the same additionalScrapeConfig. This will allow extensions time to migrate as well.
• Existing rules should be replaced with PrometheusRules.

Once all of these steps are completed, most of the configuration in the additionalScrapeConfig can be migrated to PodMonitors and ServiceMonitors.