Remove UI access from the Prometheus route

After installing or upgrading to the latest OCP version, the existing OpenShift route to the prometheus-k8s service is updated to be a path-based route to '/api/v1'.

DoD:

• It is not possible to access the Prometheus UI via the OpenShift route
• Using a bearer token with sufficient permissions, it is possible to access the /api/v1/* endpoints via the OpenShift route.