firewall_gui: fix hostname display

firewall_gui/views.py

@@ -101,6 +101,7 @@ def list_entities(request, name):
             'description']),
         'hosts': make_entity_lister(Host, [
             'id',
+            ('name',lambda host: host.hostname),
             'reverse',
             'ipv4',
             'shared_ip',