fix: deletion error when deleting dashboard configmaps

[sthaha]

This commit fixes following reconcilation error when deleting dashboards installed to openshift-config-managed namespace.

continue reconciliation despite error   {"name":"kepler", "error": "power-monitoring-overview (/v1, Kind=ConfigMap): deleter: timed out waiting for deletion : timed out waiting for the condition"}
continue reconciliation despite error   {"name":"kepler", "error": "power-monitoring-by-ns (/v1, Kind=ConfigMap): deleter: timed out waiting for deletion : timed out waiting for the condition"}
finalizer state                         {"name":"kepler", "reconciler": "finalizer", "deleted": true, "finalizer": true}
2023-10-06T08:24:03Z    ERROR   Reconciler error        {"controller": "kepler", "controllerGroup": "kepler.system.sustainable.computing.io", "controllerKind": "Kepler", "Kepler": {"name":"kepler"}, "namespace": "", "name": "kepler", "reconcileID": "514af8c3-7d06-4dde-ac80-daffd24c5138", "error": "power-monitoring-by-ns (/v1, Kind=ConfigMap): deleter: timed out waiting for deletion : timed out waiting for the condition"}

The error occurs because the client does not cache objects in openshift-config-managed namespace, which this commit fixes

Fixes: https://github.com/sustainable-computing-io/kepler-operator/issues/271 Signed-off-by: Sunil Thaha sthaha@redhat.com