use reboot hint for checking reboot required

Author: sjpb

ansible/bootstrap.yml

@@ -228,13 +228,14 @@
   tasks:
     - name: Check for pending reboot from package updates
       command:
-        cmd: dnf needs-restarting
+        cmd: dnf needs-restarting -r
       register: update_reboot_required
+      failed_when: "update_reboot_required.rc not in [0, 1]"
       changed_when: false
     - name: Reboot to cover SELinux state change or package upgrades
       reboot:
         post_reboot_delay: 30
-      when: (sestatus['reboot_required'] | default(false)) or (update_reboot_required.stdout != '')
+      when: (sestatus['reboot_required'] | default(false)) or (update_reboot_required.rc == 1)
     - name: Wait for hosts to be reachable
       wait_for_connection:
         sleep: 15