Maid-315_update_data_manager_account_rebase

Based on the work from MAID-304.
1, trim DataManager account
2, update corresponding persona logical due to trimmed account in DM and PM
3, remove un-necessary class, action, etc.
4, comment out outdated tests
We need to use churn event to do this. In case of multiple churn events, routing will not be in sync with the first churn event. So we need to sequentially act on multiple churn events and also use only churn info to act on accounts.