iptables: flush nat table as well as filter table upon reset (#2174)

* iptables: flush nat table as well as filter table upon reset

* Indentation fix

roles/reset/tasks/main.yml

@@ -72,7 +72,11 @@
 
 - name: flush iptables
   iptables:
+    table: "{{ item }}"
     flush: yes
+  with_items:
+    - filter
+    - nat
   when: flush_iptables|bool
   tags:
     - iptables