ifstated: Fix default config template

roles/ifstated/templates/ifstated.conf.j2

@@ -1,4 +1,4 @@
-
-# flush routes when external carp goes up
-if carp*.link.up
+{% for int in network_vip_interfaces %}
+if carp{{ int.vhid }}.link.up
     run 'route -q flush ; route add default $(cat /etc/mygate)'
+{% endfor %}