Functional Ethernet hub with new API. Uses Dynamips backend by default for now.

gns3server/compute/dynamips/nodes/ethernet_hub.py

@@ -49,7 +49,7 @@ class EthernetHub(Bridge):
     def __json__(self):
 
         return {"name": self.name,
-                "device_id": self.id,
+                "node_id": self.id,
                 "project_id": self.project.id}
 
     @asyncio.coroutine