Slight tweaks

playbooks/rear_backup.yml

@@ -10,9 +10,9 @@
     - name: "Debug survey: rear_force_backup"
       ansible.builtin.debug:
         var: rear_force_backup
+      when:
+        - rear_force_backup is defined
 
     - name: Include the backup role
       ansible.builtin.include_role:
         name: ../roles/rear_backup
-      when:
-        - rear_force_backup | default(false) | bool