feat ✨: Add debug tasks for Proxmox firewall config path and contents

This commit introduces new debug tasks to help diagnose issues related to the Proxmox firewall configuration path and its contents. These tasks will assist in verifying that the paths are correctly set up and that the necessary files are present.

tasks/fail2ban.yml

@@ -156,6 +156,13 @@
       }}
   when: pve_installed.stat.exists | default(false)
 
+- name: fail2ban | show firewall config path
+  ansible.builtin.debug:
+    msg: >
+      WARNING: Proxmox firewall config path is:
+      {{ pve_firewall_config}}
+  when: pve_firewall_config is defined
+
 #################################################
 # Detect firewall configuration
 #################################################
@@ -172,15 +179,19 @@
   register: fw_content
   when: fw_stat.stat.exists | default(false)
 
+- name: fail2ban | debug config contents
+  ansible.builtin.debug:
+    msg: >
+      {{ fw_content }}
+  when: not pve_firewall_enabled
+
 - name: fail2ban | Determine if firewall enabled
   ansible.builtin.set_fact:
     pve_firewall_enabled: >-
       {{
-        (fw_stat.stat.exists | default(false)) and
+        fw_stat.stat.exists and
-        (
+        (fw_content.content | b64decode)
-          (fw_content.content | default('') | b64decode)
+        is search('^enable:\s*1$', multiline=True)
-          is search('enable:\s*1')
-        )
       }}
 
 - name: fail2ban | Warn if firewall not enabled