Merge "Assure iptables is installed inside multi-node-firewall role"

roles/multi-node-firewall/tasks/main.yaml

@@ -1,3 +1,8 @@
+- name: Ensure iptables
+  become: true
+  package:
+    name: iptables
+
 - name: Set up the host ip addresses
   set_fact:
     ipv4_addresses: >