Fix bug: state shall be XML encapsulated.

slapos/slap/slap.py

@@ -160,7 +160,7 @@ class OpenOrder(SlapDocument):
         'partition_reference': partition_reference,
         'partition_parameter_xml': xml_marshaller.dumps(partition_parameter_kw),
         'filter_xml': xml_marshaller.dumps(filter_kw),
-        'state': state,
+        'state': xml_marshaller.dumps(state),
       }
     if software_type is not None:
       request_dict['software_type'] = software_type