create ref using display name as DisplayName not qname.Name!!

Author: oroulet

opcua/server/address_space.py

@@ -252,7 +252,7 @@ def _add_ref_from_parent(self, nodedata, item):
         desc.NodeId = nodedata.nodeid
         desc.NodeClass = item.NodeClass
         desc.BrowseName = item.BrowseName
-        desc.DisplayName = ua.LocalizedText(item.BrowseName.Name)
+        desc.DisplayName = item.NodeAttributes.DisplayName
         desc.TypeDefinition = item.TypeDefinition
         desc.IsForward = True
         self._aspace[item.ParentNodeId].references.append(desc)