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

Consistent boolean values in ansible playbooks

roles/kubernetes/control-plane/tasks/encrypt-at-rest.yml

@@ -2,9 +2,9 @@
 - name: Check if secret for encrypting data at rest already exist
   stat:
     path: "{{ kube_cert_dir }}/secrets_encryption.yaml"
-    get_attributes: no
-    get_checksum: no
-    get_mime: no
+    get_attributes: false
+    get_checksum: false
+    get_mime: false
   register: secrets_encryption_file
 
 - name: Slurp secrets_encryption file if it exists