fix namespace server issue

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

server/options.go

@@ -71,11 +71,12 @@ func NewOptions(opts ...Option) Options {
 		Tracer:           tracer.DefaultTracer,
 		Broker:           broker.DefaultBroker,
 		Registry:         registry.DefaultRegistry,
+		Transport:        transport.DefaultTransport,
 		Address:          DefaultAddress,
 		Name:             DefaultName,
 		Version:          DefaultVersion,
 		Id:               DefaultId,
-		Transport:        transport.DefaultTransport,
+		Namespace:        DefaultNamespace,
 	}
 
 	for _, o := range opts {

server/server.go

@@ -144,4 +144,5 @@ var (
 	DefaultRegisterCheck    = func(context.Context) error { return nil }
 	DefaultRegisterInterval = time.Second * 30
 	DefaultRegisterTTL      = time.Second * 90
+	DefaultNamespace        = "micro"
 )