Refactor sepolicy to support central mode on user.

Functionally this is a no-op change.

This is a cherry-pick of 356b98d552e8b6f1936c045cb1a681dfbcd485ee.

Bug: 152976928
Change-Id: If4c0c6c74e60cc84f4adedfd430b385795cd15eb
Merged-In: If4c0c6c74e60cc84f4adedfd430b385795cd15eb
2 files changed