fixed issue when sorting hook when saving to xml, due to enum refactoring, updated test case to hit this potential issue in the future

daemon/tests/test_xml.py

@@ -17,12 +17,17 @@ class TestXml:
         :param session: session for test
         :param tmpdir: tmpdir to create data in
         """
-        # create hook
+        # create hooks
         file_name = "runtime_hook.sh"
         data = "#!/bin/sh\necho hello"
         state = EventTypes.RUNTIME_STATE
         session.add_hook(state, file_name, None, data)
 
+        file_name = "instantiation_hook.sh"
+        data = "#!/bin/sh\necho hello"
+        state = EventTypes.INSTANTIATION_STATE
+        session.add_hook(state, file_name, None, data)
+
         # save xml
         xml_file = tmpdir.join("session.xml")
         file_path = xml_file.strpath