Description of problem:

Gitops addon resources were not cleaned up properly after deleting it's ManagedClusterAddon CR

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

How reproducible: Always

Steps to Reproduce:

1.  Enable gitopsaddon on a manaegd cluster by creating a mca
2. Check managed cluster, see openshift-gitops pods running in the openshift-gitops ns
3.  Delete the mca on the hub
4. Check managed cluster openshift-gitops ns again

Actual results:

Those openshift-gitops pods are still there

Expected results:

Those openshift-gitops pods should be removed

Additional info:

When debugging, we used gitopscluster CR with field

olmSubscription:      
  enabled: true