pkg/transport: update tls.Config copy method

For Go 1.7

pkg/transport/listener.go

@@ -268,6 +268,8 @@ func ShallowCopyTLSConfig(cfg *tls.Config) *tls.Config {
 		ClientSessionCache:          cfg.ClientSessionCache,
 		MinVersion:                  cfg.MinVersion,
 		MaxVersion:                  cfg.MaxVersion,
+		DynamicRecordSizingDisabled: cfg.DynamicRecordSizingDisabled,
+		Renegotiation:               cfg.Renegotiation,
 		CurvePreferences:            cfg.CurvePreferences,
 	}
 	return &ncfg