[OCP4.x] Dependent objects are not deleted when deployment is removed

Issue

• Dependent objects aren't deleted when the deployment is removed. The test is done as follows.

$ oc get all
No resources found in redhat-support namespace.

# created deployment in a test namespace

$ oc get all
NAME                           READY   STATUS    RESTARTS   AGE
pod/example-5fb6876865-84drd   1/1     Running   0          19s
pod/example-5fb6876865-tftmq   1/1     Running   0          19s
pod/example-5fb6876865-vqgtl   1/1     Running   0          19s

NAME                      READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/example   3/3     3            3           19s

NAME                                 DESIRED   CURRENT   READY   AGE
replicaset.apps/example-5fb6876865   3         3         3       19s

$ oc delete deployment.apps/example
deployment.apps "example" deleted

$ oc get all                                                                                                                             
NAME                           READY   STATUS    RESTARTS   AGE
pod/example-5fb6876865-84drd   1/1     Running   0          65s
pod/example-5fb6876865-tftmq   1/1     Running   0          65s
pod/example-5fb6876865-vqgtl   1/1     Running   0          65s

NAME                                 DESIRED   CURRENT   READY   AGE
replicaset.apps/example-5fb6876865   3         3         3       65s

• On a working server, it works as follows.

$ oc get all --show-labels
NAME                           READY   STATUS    RESTARTS   AGE   LABELS
pod/example-5fb6876865-4htzm   1/1     Running   0          25h   app=hello-openshift,pod-template-hash=5fb6876865
pod/example-5fb6876865-8brvj   1/1     Running   0          25h   app=hello-openshift,pod-template-hash=5fb6876865
pod/example-5fb6876865-kh7hd   1/1     Running   0          25h   app=hello-openshift,pod-template-hash=5fb6876865

NAME                                 DESIRED   CURRENT   READY   AGE   LABELS
replicaset.apps/example-5fb6876865   3         3         3       25h   app=hello-openshift,pod-template-hash=5fb6876865

$ oc delete all -l app=hello-openshift
pod "example-5fb6876865-4htzm" deleted
pod "example-5fb6876865-8brvj" deleted
pod "example-5fb6876865-kh7hd" deleted
replicaset.apps "example-5fb6876865" deleted