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

Consistent boolean values in ansible playbooks

roles/kubernetes/node/tasks/loadbalancer/nginx-proxy.yml

@@ -17,14 +17,14 @@
     dest: "{{ nginx_config_dir }}/nginx.conf"
     owner: root
     mode: "0755"
-    backup: yes
+    backup: true
 
 - name: Nginx-proxy | Get checksum from config
   stat:
     path: "{{ nginx_config_dir }}/nginx.conf"
-    get_attributes: no
-    get_checksum: yes
-    get_mime: no
+    get_attributes: false
+    get_checksum: true
+    get_mime: false
   register: nginx_stat
 
 - name: Nginx-proxy | Write static pod