roles/common: Rename "iptables" task to "firewall"

roles/common/tasks/firewall_Debian.yml

@@ -0,0 +1,18 @@
+---
+- name: Install firewalld and deps
+  when: ansible_distribution_major_version | version_compare('8', '>=')
+  apt: pkg={{ item }} state=latest
+  with_items:
+    - firewalld
+    - tidy
+  tags: packages
+
+- name: Copy firewalld public zone file
+  when: ansible_distribution_major_version | version_compare('8', '>=')
+  template: src=public.xml.j2 dest=/etc/firewalld/zones/public.xml owner=root mode=0600
+
+- name: Format public.xml firewalld zone file
+  when: ansible_distribution_major_version | version_compare('8', '>=')
+  shell: tidy -xml -iq -m -w 0 /etc/firewalld/zones/public.xml
+  notify:
+    - restart firewalld