Resolve "Implement hidden network support"

kypo/cloud_commons/topology_instance.py

@@ -110,7 +110,7 @@ class TopologyInstance:
         Return a list of TI virtual machines that are not hidden directly
         or through their network.
         """
-        hosts = [self.get_node(m.name) for m in self.topology_definition.net_mappings
+        hosts = [self.get_node(m.host) for m in self.topology_definition.net_mappings
                  if not self.get_node(m.host).hidden and not self.get_network(m.network).hidden]
 
         # removes duplicates caused by hosts assigned to multiple networks