Enable check mode in DNS Cleanup tasks (#9472)

roles/kubernetes-apps/ansible/tasks/cleanup_dns.yml

@@ -3,6 +3,7 @@
   command: "{{ kubectl }} get deploy -n kube-system coredns -o jsonpath='{ .spec.template.metadata.annotations.createdby }'"
   register: createdby_annotation_deploy
   changed_when: false
+  check_mode: false
   ignore_errors: true  # noqa ignore-errors
   when:
     - dns_mode in ['coredns', 'coredns_dual']
@@ -12,6 +13,7 @@
   command: "{{ kubectl }} get svc -n kube-system coredns -o jsonpath='{ .metadata.annotations.createdby }'"
   register: createdby_annotation_svc
   changed_when: false
+  check_mode: false
   ignore_errors: true  # noqa ignore-errors
   when:
     - dns_mode in ['coredns', 'coredns_dual']