gw1: Do not reboot after dnf automatic updates

We don't want the firewall rebooting itself after kernel updates.
Instead, I will reboot it manually at the next appropriate time.

host_vars/gw1.pyrocufflink.blue/main.yml

@@ -37,3 +37,5 @@ promtail_scrape_configs:
       format: '2006-01-02T15:04:05.000'
   - output:
       source: message
+
+dnf_automatic_reboot: never