HyperShift Namespace Reconciler

This controller is responsible for making sure the namespaces created by HyperShift are ignored by both cluster-monitoring and user-workload monitoring by manipulating the labels on the namespaces on the hive cluster:

• openshift.io/cluster-monitoring: "true" does not exist
• openshift.io/user-monitoring: "false" exists

This controller is a workaround before HOSTEDCP-706 is implemented.