Remove label as a selector

We shouldn't rely on label as a selector. Old environments had different
name and label may also change in future. Use --all instead to delete
all instances of resources, in the namespace of specified resource types

This also unifies the approach with data plane cleanup

Closes-Bug: OSPCIX-803

Author: holser

tests/roles/pcp_cleanup/tasks/main.yaml

@@ -3,17 +3,17 @@
     {{ shell_header }}
     {{ oc_header }}
     # Cleanup OpenStackControlPlane object
-    oc delete --ignore-not-found=true osctlplane -l core.openstack.org/openstackcontrolplane
+    oc delete --ignore-not-found=true OpenStackControlPlane --all || true
 
     # Ensure that all pods in openstack namespace are deleted
     while oc get pod | grep -E 'rabbitmq-server-0|openstack-galera-0'; do
       sleep 2;
     done
 
     # Cleanup OpenStackDataplane objects
-    oc delete --ignore-not-found=true OpenStackDataPlaneDeployment --all
-    oc delete --ignore-not-found=true OpenStackDataPlaneNodeSet --all
-    oc delete --ignore-not-found=true OpenStackDataPlaneService --all
+    oc delete --ignore-not-found=true OpenStackDataPlaneDeployment --all || true
+    oc delete --ignore-not-found=true OpenStackDataPlaneNodeSet --all || true
+    oc delete --ignore-not-found=true OpenStackDataPlaneService --all || true
 
     # Delete Adoption helper pods
     oc delete --ignore-not-found=true --wait=false pod mariadb-copy-data