Make RoleFrameworkInitializer a module libraries system API.

It's only used during SystemServiceRegistry and shouldn't be called by
anything else, let alone system apps. So it shouldn't be a regular
system API, but should be a module libraries system API.

Bug: 189162019
Test: presubmit
Change-Id: I66b6fb7dff46881401dbd80c924d13f07ac4a6c6
3 files changed