chore 📦: Remove redundant directory creation and update shell command for robustness

This commit removes unnecessary directory creation steps in the build process, simplifying the setup. Additionally, it updates the shell command to be more robust and reliable.

tasks/fail2ban.yml

@@ -115,11 +115,6 @@
 # Create Proxmox firewall IPSet
 #################################################
 
-- name: fail2ban | Ensure firewall directory exists
-  ansible.builtin.file:
-    path: /etc/pve/firewall
-    state: directory
-
 - name: fail2ban | Add Fail2Ban IPSet to cluster firewall
   ansible.builtin.blockinfile:
     path: "{{ pve_firewall_config }}"
@@ -144,7 +139,11 @@
       IN DROP -source +{{ f2b_ipset_name }}
 
 - name: fail2ban | Extract corosync ring0 address
-  ansible.builtin.shell: grep ring0_addr /etc/pve/corosync.conf | awk '{print $2}'
+  ansible.builtin.shell: |
+    set -o pipefail
+    grep ring0_addr /etc/pve/corosync.conf | awk '{print $2}'
+  args:
+    executable: /bin/bash
   register: corosync_ip
   changed_when: false
   when: cluster_status.stat.exists