Description of problem:

When a managedcluster is added to a managedclusterset, this label is added:

cluster.open-cluster-management.io/clusterset:x

When a managedcluster is removed from a managedclusterset, this label is removed from the managedcluster. However when a managedclusterset is deleted, the clusterset label remains on the managedcluster. I don't think this is right behavior. Why would we remove the label when the managedcluster is removed from the managedclusterset, but not when the managedclusterset itself is deleted?

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

How reproducible:

Steps to Reproduce:

1. Create a managedclusterset and add a managedcluster to set
2. Delete the managedclusterset

Actual results:

clusterset label remains on managedcluster

Expected results:

clusterset label should be removed from managedcluster

Additional info:

Any placement or other resource targeting a managedcluster by clusterset label will incorrectly target the managedcluster if managedclusterset is deleted.