'ownerReferences' section is added to the openshift-keda namespace when KedaController is deployed

Cause: A bug in Custom Metrics Autoscaler Operator caused it to attempt to take ownership of all managed objects, even cluster-scoped objects and objects in other namespaces. Consequence: The openshift-keda namespace is modified by the Custom Metrics Autoscaler Operator, adding an ownerReferences. While this update should have no actual consequences in functionality, it may cause confusion for cluster administrators. Fix: The Custom Metrics Autoscaler Operator skips adding the ownerReference field on any cluster-scoped object or object in another namespace. Result: The openshift-keda namespace will no longer have a superfluous ownerReference field added.