This work is part of OCM-10395, which aims to enable the Cluster Version Operator to access metrics for conditional update risk evaluation in ROSA HCP clusters using RHOBS monitoring. 

In ROSA HCP with RHOBS monitoring, the Prometheus endpoint is the OBO Prometheus instance, not the management cluster's default Prometheus (CoreOS). Currently, when operators install HyperShift with the --rhobs-monitoring flag, CVO cannot access the OBO Prometheus endpoint for metrics-based conditional update risk evaluation. 

We have validated in int-blue that the network policy and URL are correct to allow CVO connect to OBO, see details in https://issues.redhat.com/browse/OCM-19543

Backporting:
We need backport to 4.21.z and 4.20.z. 

100% - All ROSA HCP clusters using RHOBS monitoring on 4.21.z and 4.20.z currently lack CVO metrics access

1. Deploy HyperShift operator with --rhobs-monitoring flag enabled
2. Create a ROSA HCP hosted cluster
3. Examine the CVO deployment in the hosted control plane namespace
4. Check if CVO pod has RBAC permissions to access metrics endpoint
5. Verify network policies allow egress to OBO Prometheus     

1. CVO deployment does NOT have metrics access enabled
2. CVO pod lacks RBAC permissions for metrics endpoint access
3. Network policies do NOT allow egress to OBO Prometheus

1. CVO deployment should have metrics access automatically enabled when RHOBS monitoring is active
2. Cluster should perform conditional update risk assessment at cluster level using actual cluster metrics

Related JIRA: 1. https://issues.redhat.com/browse/ROSA-377 2. https://issues.redhat.com/browse/OCM-10395