Description of problem:

Removing a Hosted Cluster causes the klusterlet resource and namespace to be orphaned.

This blocks importing a new cluster with the same name as the previous klusterlet

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

Latest ACM 2.7

How reproducible:

Every time

Steps to Reproduce:

1. Import a Hosted Cluster
2. Destroy the cluster
3. Detach the ManagedCluster
4. oc get klusterlet, shows the resource still exists days later
5. Namespace remains, if deleted, it is recreated
6. Causes an error that you can not import a cluster with the same name

Actual results:

klusterlet remains indefinitely.

Import fails.

Expected results:

klusterlet is remove, importing a new cluster with the same name is successful

Additional info: