mv firewall scripts to roles.

roles/modify-ipt-gateway/handlers/main.yml

@@ -0,0 +1,20 @@
+- name: Restart IPv4 Firewall
+  service:
+    name: ipt-firewall
+    state: restarted
+  when:
+     - main_ipv4_exists.stat.exists
+
+- name: Restart IPv6 Firewall
+  service:
+    name: ip6t-firewall
+    state: restarted
+  when:
+     - main_ipv6_exists.stat.exists
+
+- name: Restart Munin Node
+  service:
+    name: munin-node
+    state: restarted
+  when:
+     - munin_node_exists.stat.exists