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

Consistent boolean values in ansible playbooks

roles/kubernetes/node/tasks/kubelet.yml

@@ -11,7 +11,7 @@
     src: "kubelet.env.{{ kubeletConfig_api_version }}.j2"
     dest: "{{ kube_config_dir }}/kubelet.env"
     setype: "{{ (preinstall_selinux_state != 'disabled') | ternary('etc_t', omit) }}"
-    backup: yes
+    backup: true
     mode: "0600"
   notify: Node | restart kubelet
   tags:
@@ -32,7 +32,7 @@
   template:
     src: "kubelet.service.j2"
     dest: "/etc/systemd/system/kubelet.service"
-    backup: "yes"
+    backup: true
     mode: "0600"
     validate: "sh -c '[ -f /usr/bin/systemd/system/factory-reset.target ] || exit 0 && systemd-analyze verify %s:kubelet.service'"
     # FIXME: check that systemd version >= 250 (factory-reset.target was introduced in that release)
@@ -48,7 +48,7 @@
 - name: Enable kubelet
   service:
     name: kubelet
-    enabled: yes
+    enabled: true
     state: started
   tags:
     - kubelet