Have an exit code when reboot is required

[DJviolin]

For Ansible deployment, please provide an exit code when reboot of the system is required.

So far this is how I solve this problem:

# tasks/main.yml

- name: Update Raspberry Pi kernel and firmware
  ansible.builtin.shell:
    cmd: echo y | rpi-update
  register: rpi_update_result
  changed_when: "rpi_update_result.stdout | regex_search('reboot is needed')"
  notify: Reboot machine

- name: Force all notified handlers to run at this point, not waiting for normal sync points
  ansible.builtin.meta: flush_handlers

# handlers/main.yml

- name: Reboot machine
  ansible.builtin.reboot: