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

Consistent boolean values in ansible playbooks

roles/etcd/tasks/check_certs.yml

@@ -17,9 +17,9 @@
 - name: "Check certs | Register ca and etcd admin/member certs on etcd hosts"
   stat:
     path: "{{ etcd_cert_dir }}/{{ item }}"
-    get_attributes: no
-    get_checksum: yes
-    get_mime: no
+    get_attributes: false
+    get_checksum: true
+    get_mime: false
   register: etcd_member_certs
   when: inventory_hostname in groups['etcd']
   with_items: