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
