Do not use ‘yes/no’ for boolean values (#11472)

Consistent boolean values in ansible playbooks

roles/kubernetes/kubeadm/tasks/main.yml

@@ -14,17 +14,17 @@
 - name: Check if kubelet.conf exists
   stat:
     path: "{{ kube_config_dir }}/kubelet.conf"
-    get_attributes: no
-    get_checksum: no
-    get_mime: no
+    get_attributes: false
+    get_checksum: false
+    get_mime: false
   register: kubelet_conf
 
 - name: Check if kubeadm CA cert is accessible
   stat:
     path: "{{ kube_cert_dir }}/ca.crt"
-    get_attributes: no
-    get_checksum: no
-    get_mime: no
+    get_attributes: false
+    get_checksum: false
+    get_mime: false
   register: kubeadm_ca_stat
   delegate_to: "{{ groups['kube_control_plane'][0] }}"
   run_once: true
@@ -79,7 +79,7 @@
   template:
     src: "kubeadm-client.conf.{{ kubeadmConfig_api_version }}.j2"
     dest: "{{ kube_config_dir }}/kubeadm-client.conf"
-    backup: yes
+    backup: true
     mode: "0640"
   when: not is_kube_master
 
@@ -140,7 +140,7 @@
     dest: "{{ kube_config_dir }}/kubelet.conf"
     regexp: 'server:'
     line: '    server: {{ kube_apiserver_endpoint }}'
-    backup: yes
+    backup: true
   when:
     - kubeadm_config_api_fqdn is not defined
     - not is_kube_master
@@ -152,7 +152,7 @@
     dest: "{{ kube_config_dir }}/kubelet.conf"
     regexp: '^    server: https'
     line: '    server: {{ kube_apiserver_endpoint }}'
-    backup: yes
+    backup: true
   when:
     - not is_kube_master
     - loadbalancer_apiserver is defined