add support for arch

ansible/roles/common/tasks/main.yaml

@@ -3,10 +3,17 @@
     name: "{{ inventory_hostname }}"
     use: systemd
 
-- name: Install firewalld
+- name: Install firewalld on RedHat family
   package:
     name: firewalld
     state: latest
+  when: ansible_os_family == "RedHat"
+
+- name: Install firewalld on Arch
+  community.general.pacman:
+    name: firewalld
+    state: present
+  when: ansible_os_family == "Archlinux"
 
 - name: Start and enable firewalld
   service: