Idempotency fixes (#1838)

roles/kubernetes/node/tasks/facts.yml

@@ -2,6 +2,7 @@
 - name: look up docker cgroup driver
   shell: "docker info | grep 'Cgroup Driver' | awk -F': ' '{ print $2; }'"
   register: docker_cgroup_driver_result
+  changed_when: false
 
 - set_fact:
     standalone_kubelet: >-

roles/kubernetes/node/tasks/pre_upgrade.yml

@@ -8,4 +8,5 @@
 - name: "Pre-upgrade | ensure kubelet container is stopped if using host deployment"
   command: docker stop kubelet
   failed_when: false
+  changed_when: false
   when: kubelet_deployment_type == 'host'