Add option to force ReaR backup: draft

bigboot_rear_backup.yml

@@ -1,4 +1,12 @@
 ---
+- name: "Debug survey var: rear_force_backup"
+  ansible.builtin.debug:
+    var: rear_force_backup
+
+- name: Failure
+  ansible.builtin.fail:
+    msg: "Failed as requested from task."
+
 - name: Perform a ReaR backup before the /boot expansion
   ansible.builtin.import_playbook: rhc.rear.rear_backup
   when: