Migrate wellbeing to use role

Migrate wellbeing to use the role infrastructure. Based on ag/13357357.

Bug: 158878560

Test: atest com.google.android.wellbeing.gts.WellbeingTest
Test: atest CtsPermission2TestCases:PermissionPolicyTest
Test: atest FrameworksServicesTests:AppStandbyControllerTests
Change-Id: I0a6c986fe9a53be52013f300ba7795dfdd0887e6