add ariane host_vars/ariane and role

roles/ariane/templates/iptables_rules_v4.j2

@@ -0,0 +1,14 @@
+# {{ ansible_managed }}
+
+*filter
+:INPUT DROP [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [0:0]
+-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
+-A INPUT -p icmp -j ACCEPT
+-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A INPUT -i lo -j ACCEPT
+-A INPUT -p tcp -j REJECT --reject-with tcp-reset
+-A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
+-A INPUT -j REJECT --reject-with icmp-proto-unreachable
+COMMIT