Refactor pre-created user app permission test

Use proto to check each user's package permissions

Bug: 167454361
Test: m cts && atest PackageIncidentTest
m CtsCarHostTestCases && cts-tradefed run cts-dev -m CtsCarHostTestCases -t android.car.cts.PreCreateUsersHostTest

Change-Id: Ibd2a3a4ce4cca7978ddb0ef9358b811e5029083d
2 files changed