Inform the kernel via configfs, of userids that should be excluded when an app is not installed for them. Also push userid to remove_userid when a user is removed so that the exclude list of that user can be cleaned up in one command for all packages. Test: runtest -x ....KernelPackageMappingTests.java Change-Id: Ib94b1a0b737f45b2d03deb9650f0f0eb68e363d9