Marshall/unmarshall parameter.

It is required in order to pass values like None.

master/product/Vifib/Tool/SlapTool.py

@@ -578,6 +578,8 @@ class SlapTool(BaseTool):
 
     In any other case returns not important data and HTTP code is 403 Forbidden
     """
+    if state:
+      state = xml_marshaller.xml_marshaller.loads(state)
     if state is None:
       state = 'started'
     if shared_xml:

slapos/slap/slap.py

@@ -307,7 +307,7 @@ class ComputerPartition(SlapDocument):
         'partition_parameter_xml': xml_marshaller.dumps(
                                         partition_parameter_kw),
         'filter_xml': xml_marshaller.dumps(filter_kw),
-        'state': state,
+        'state': xml_marshaller.dumps(state),
       }
     self._connection_helper.POST('/requestComputerPartition', request_dict)
     xml = self._connection_helper.response.read()