[REF] mgmtsystem_action

The current module inherit `crm.claim` while the `state` attribute doesn't exist anymore. I made some changes to use the `stage_id` instead but I'm not so sure it's a good idea. I'm open to suggestions.
What I think I add to add it back because one other module did call thoses methods and they are supposed to be used in the workflow xml file. I wasn't so sure what we should do with that.