Merge pull request #53 from skycoin/fix/service-disc-value

fix service disc value

Author: nkryuchkov

pkg/prepconf/prepare.go

@@ -120,7 +120,10 @@ func generateVisorConfig(_ Config, bp boot.Params) (interface{}, error) {
 	out.ShutdownTimeout = visorconfig.DefaultTimeout
 	out.RestartCheckDelay = restart.DefaultCheckDelay.String()
 	out.Launcher = &visorconfig.V1Launcher{
-		Discovery: nil,
+		Discovery: &visorconfig.V1AppDisc{
+			ServiceDisc:    skyenv.DefaultServiceDiscAddr,
+			UpdateInterval: visorconfig.Duration(skyenv.AppDiscUpdateInterval),
+		},
 		Apps: []launcher.AppConfig{
 			{
 				Name:      skyenv.SkychatName,