Repositionning of the fail2ban configuration with nftables from wireguard to...

Repositionning of the fail2ban configuration with nftables from wireguard to ext_srv as all servers exposed to the outside should be protected as well. Also minor cosmetic changes and light reordering.

handlers/main.yml

+---
+- name: Reload fail2ban
+  service:
+    name: fail2ban
+    state: reloaded
\ No newline at end of file