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

Consistent boolean values in ansible playbooks

contrib/dind/roles/dind-cluster/tasks/main.yaml

@@ -14,7 +14,7 @@
     src: "/bin/true"
     dest: "{{ item }}"
     state: link
-    force: yes
+    force: true
   with_items:
     # DIND box may have swap enable, don't bother
     - /sbin/swapoff
@@ -58,7 +58,7 @@
     name: "{{ distro_user }}"
     uid: 1000
     # groups: sudo
-    append: yes
+    append: true
 
 - name: Allow password-less sudo to "{{ distro_user }}"
   copy: