Display internal flag on network inspect

Also adds internal network tests for bridge network

Signed-off-by: Chun Chen <ramichen@tencent.com>
Upstream-commit: c199506b59f60ac456cb0448ddd86e6dec92bc0a
Component: engine

components/engine/docs/reference/api/docker_remote_api.md

@@ -105,6 +105,7 @@ This section lists each version from latest to oldest.  Each listing includes a
 [Docker Remote API v1.23](docker_remote_api_v1.23.md) documentation
 
 * `GET /containers/json` returns the state of the container, one of `created`, `restarting`, `running`, `paused`, `exited` or `dead`.
+* `GET /networks/(name)` now returns an `Internal` field showing whether the network is internal or not.
 
 
 ### v1.22 API changes

components/engine/docs/reference/api/docker_remote_api_v1.23.md

@@ -2963,6 +2963,7 @@ Content-Type: application/json
         "foo": "bar"
     }
   },
+  "Internal": false,
   "Containers": {
     "19a4d5d687db25203351ed79d478946f861258f018fe384f229f2efa4b23513c": {
       "Name": "test",

components/engine/docs/reference/commandline/network_inspect.md

@@ -50,6 +50,7 @@ $ sudo docker network inspect bridge
                 }
             ]
         },
+        "Internal": false,
         "Containers": {
             "bda12f8922785d1f160be70736f26c1e331ab8aaf8ed8d56728508f2e2fd4727": {
                 "Name": "container2",