fix a few tasks falsely reporting "changed" (#6269)

Co-authored-by: Hans Feldt <hafe@users.noreply.github.com>

roles/kubernetes/kubeadm/tasks/main.yml

@@ -30,23 +30,26 @@
     - kubeadm_ca_stat.stat.exists
   delegate_to: "{{ groups['kube-master'][0] }}"
   run_once: true
+  changed_when: false
 
 - name: Create kubeadm token for joining nodes with 24h expiration (default)
   command: "{{ bin_dir }}/kubeadm token create"
   register: temp_token
   delegate_to: "{{ groups['kube-master'][0] }}"
   when: kubeadm_token is not defined
+  changed_when: false
 
 - name: Set kubeadm_token to generated token
   set_fact:
     kubeadm_token: "{{ temp_token.stdout }}"
   when: kubeadm_token is not defined
 
-- name: gets the kubeadm version
+- name: Get the kubeadm version
   command: "{{ bin_dir }}/kubeadm version -o short"
   register: kubeadm_output
+  changed_when: false
 
-- name: sets kubeadm api version to v1beta2
+- name: Set kubeadm api version to v1beta2
   set_fact:
     kubeadmConfig_api_version: v1beta2