Pass excluded keys to the backup agent in onRestore

Pass the list of the keys excluded from KV restore to the backup agent to make it aware of what data has been removed (in case it has any application-level consequences) as well as the data that should be removed by the agent itself.

Bug: 145126096
Test: atest CtsBackupTestCases
Change-Id: I34415b149b379fb5bb67b0fbcd70ec9b9858acfe
3 files changed