Change default property key

Fix #109

Author: alvarolopez

caso/extract/manager.py

@@ -46,7 +46,7 @@
     ),
     cfg.StrOpt(
         "vo_property",
-        default="accounting:VO",
+        default="VO",
         help="Property key used to get the VO name from the project properties. ",
     ),
     cfg.StrOpt(