feat ✨: Add conditional execution for reloading PVE firewall

This commit introduces a new feature that allows conditional execution of the PVE firewall reload command based on certain conditions, enhancing flexibility and control over firewall management.

tasks/fail2ban.yml

@@ -148,6 +148,11 @@
   changed_when: false
   when: cluster_status.stat.exists
 
+- name: Validate Proxmox firewall configuration
+  ansible.builtin.command: pve-firewall compile
+  register: fw_compile_check
+  changed_when: false
+  
 # Then automatically whitelist it in Fail2Ban:
 # ignoreip = 127.0.0.1/8 {{ corosync_ip.stdout }}