After creating a ROSA hcp cluster, HyperShift operator will create a secret named ***-kubeadmin-password to store the password for kubeadmin in the management cluster, also acm's hypershift-addon-operator will create a mirror secret in the service cluster so that OCM can read it. 
    But if oauth is configured(in the HostedCluster, .Spec.Configuration.OAuth is set), the password is invalid, the original secret in management cluster will be removed by hypershift operator, but the mirror secret still there.
    

    1.Create a ROSA HCP cluster, during creation, select to add an admin user.
    2.After the cluster is ready, access the /credentials endpoint using the command 'ocm get /api/clusters_mgmt/v1/clusters/{cluster_id}/credentials' to get the kubeadmin config and password
    3.Try to use the password to login, will get 401 response