Add network --format flag to ls

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: a8aaafc4a3fc716bdb2c4e571e34c66eb80bbab2
Component: engine

components/engine/api/client/cli.go

@@ -130,6 +130,12 @@ func (cli *DockerCli) ImagesFormat() string {
 	return cli.configFile.ImagesFormat
 }
 
+// NetworksFormat returns the format string specified in the configuration.
+// String contains columns and format specification, for example {{ID}}\t{{Name}}
+func (cli *DockerCli) NetworksFormat() string {
+	return cli.configFile.NetworksFormat
+}
+
 func (cli *DockerCli) setRawTerminal() error {
 	if os.Getenv("NORAW") == "" {
 		if cli.isTerminalIn {