pcn-router: fix bug when creating a service with full configuration

Routes should only be created after the ports, otherwise the route creation
will fail because it'll not find an appropiate out interface.

Signed-off-by: Mauricio Vasquez B <mauriciovasquezbernal@gmail.com>

Author: mauriciovasquezbernal

src/services/pcn-router/src/Router.cpp

@@ -35,11 +35,10 @@ Router::Router(const std::string name, const RouterJsonObject &conf)
   logger()->set_pattern("[%Y-%m-%d %H:%M:%S.%e] [Router] [%n] [%l] %v");
   logger()->info("Creating Router instance");
 
+  addPortsList(conf.getPorts());
   addArpEntryList(conf.getArpEntry());
   addRouteList(conf.getRoute());
 
-  addPortsList(conf.getPorts());
-
   if (get_shadow()) {
     // netlink notification
     netlink_notification_index_route_added = netlink_instance_router_.registerObserver(