Comment 18 for bug 1586584

neutron net-device-topology-list:
network-id: get by command "net-list"
network_name: get by command "net-list"
instances: get by "port-list" and filter "net-id"
router : get the num of ports which device_owner start with "network:router"
free_port: get the num of ports which device_owner is None

neutron net-device-topology-show net_id：
connected-devices-id : get the port's device_id by command "port-list" and filter "net-id"
type: classify by port's device_owner
zone: classify by port's device_owner
host-node: can get from command "port-show"
tenant-id : can get from command "port-show" and "nova show"
link-port-id : port-id
ip address: can get from command "port-show"
mac address: can get from command "port-show"