Fix ansible-lint E301 for commands fetching data (#6465)

tests/testcases/015_check-nodes-ready.yml

@@ -15,16 +15,18 @@
   - import_role:
       name: cluster-dump
 
-  - name: Check kubectl output  # noqa 301 305
+  - name: Check kubectl output  # noqa 305
     shell: "{{ bin_dir }}/kubectl get nodes"
+    changed_when: false
     register: get_nodes
     no_log: true
 
   - debug:
       msg: "{{ get_nodes.stdout.split('\n') }}"
 
-  - name: Check that all nodes are running and ready  # noqa 301 305
+  - name: Check that all nodes are running and ready  # noqa 305
     shell: "{{ bin_dir }}/kubectl get nodes --no-headers -o yaml"
+    changed_when: false
     register: get_nodes_yaml
     until:
     # Check that all nodes are Status=Ready