Description of problem: I follow the Doc https://docs.google.com/document/d/1HiK_gDr_jT0eBZjD4kTnrDPL72qalbPuSFo5cn4FMvk/edit#heading=h.ewpwhowdpnnj

to set up the ACM Hub with Load balancers (L3/L4) supports SSL pass-through

And set customer URL in the MCOCR as https://issues.redhat.com/browse/ACM-11407 described

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:

1. set up load balance server
2. set up the ACM + managed cluster
3. setting as the Doc described https://docs.google.com/document/d/1HiK_gDr_jT0eBZjD4kTnrDPL72qalbPuSFo5cn4FMvk/edit#heading=h.gbi3bphza0ig
4. set custom URL into the MCOCR as
   ```
   spec:
     advanced:
       customAlertmanagerHubURL: https://slai-lb-server.dev09.red-chesterfield.com:6443
       customObservabilityHubURL: https://slai-lb-server.dev09.red-chesterfield.com:6443
   ```
5. Check the metrics collector log on the managed cluster
6. There's error generated
   ```
   level=warn caller=logger.go:55 ts=2024-05-09T10:27:12.688071748Z component=forwarder component=metricsclient msg="error: failed to forward request happened at time: 2.211255055s" level=warn caller=logger.go:55 ts=2024-05-09T10:27:14.909277855Z component=forwarder component=metricsclient msg="failed to forward request" err="Post \"https://observatorium-api-open-cluster-management-observability.apps.cqu-obs-proxy-hub2.dev09.red-chesterfield.com/api/metrics/v1/default/api/v1/receive\": tls: failed to verify certificate: x509: certificate is valid for observability-server-certificate, observability-observatorium-api.open-cluster-management-observability.svc.cluster.local, https://slai-lb-server.dev09.red-chesterfield.com:6443, not observatorium-api-open-cluster-management-observability.apps.cqu-obs-proxy-hub2.dev09.red-chesterfield.com" level=warn caller=logger.go:55 ts=2024-05-09T10:27:14.909315789Z component=forwarder component=metricsclient msg="error: failed to forward request happened at time: 3.870843531s"
   ```

Actual results:

Expected results:

Additional info: