Description of problem:

In OCS 4.6 external mode cluster, the ocs-operator logs are filled with the following error messages

{"level":"error","ts":"2020-10-21T15:23:25.280Z","logger":"controller_storagecluster","msg":"failed to reconcile metrics exporter","Request.Namespace":"openshift-storage","Request.Name":"ocs-external-storagecluster","error":"failed to update service openshift-storage/ocs-metrics-exporter. Service \"ocs-metrics-exporter\" is invalid: spec.clusterIP: Invalid value: \"\": field is immutable","stacktrace":"github.com/go-logr/zapr.(*zapLogger).Error\n\t/remote-source/app/vendor/github.com/go-logr/zapr/zapr.go:128\ngithub.com/openshift/ocs-operator/pkg/controller/storagecluster.(*ReconcileStorageCluster).Reconcile\n\t/remote-source/app/pkg/controller/storagecluster/reconcile.go:351\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/remote-source/app/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:256\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/remote-source/app/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:232\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/remote-source/app/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:211\nk8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/remote-source/app/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:152\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/remote-source/app/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:153\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/remote-source/app/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88"}


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

$ oc get csv
NAME                         DISPLAY                       VERSION        REPLACES              PHASE
ocs-operator.v4.6.0-137.ci   OpenShift Container Storage   4.6.0-137.ci   ocs-operator.v4.5.1   Succeeded

OCP version : 4.6.0-0.nightly-2020-10-20-172149

How reproducible:
2/2

Steps to Reproduce:


Actual results:


Expected results:


Additional info:
These error messages were seen on both upgraded clusters and new deployments of OCS 4.6 external mode