Fix keycloak metrics

Bug

Description

Metrics for keycloak are not currently working/configured correctly. As part of the update to 25.0.1, the /metrics and /health endpoint config changed to port 9000. See https://www.keycloak.org/docs/25.0.1/upgrading/#management-port-for-metrics-and-health-endpoints and https://www.keycloak.org/server/management-interface for more info.

Port 9000 is exposed in the keycloak pod, but does not have a corresponding service. I believe we would either need to configure a PodMonitor, or create a service and fix the existing ServiceMonitor.

A ServiceMonitor does exist, though does not currently show as a target within prometheus.