Add network backend to podman info

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

libpod/define/info.go

@@ -39,6 +39,7 @@ type HostInfo struct {
 	LogDriver         string           `json:"logDriver"`
 	MemFree           int64            `json:"memFree"`
 	MemTotal          int64            `json:"memTotal"`
+	NetworkBackend    string           `json:"networkBackend"`
 	OCIRuntime        *OCIRuntimeInfo  `json:"ociRuntime"`
 	OS                string           `json:"os"`
 	// RemoteSocket returns the UNIX domain socket the Podman service is listening on

libpod/info.go

@@ -131,6 +131,7 @@ func (r *Runtime) hostInfo() (*define.HostInfo, error) {
 		Kernel:            kv,
 		MemFree:           mi.MemFree,
 		MemTotal:          mi.MemTotal,
+		NetworkBackend:    r.config.Network.NetworkBackend,
 		OS:                runtime.GOOS,
 		Security: define.SecurityInfo{
 			AppArmorEnabled:     apparmor.IsEnabled(),