This CL adds feature control config file to the system image bundle.
It works with this emulator CL:
https://android-review.googlesource.com/#/c/233279/
Change-Id: I1e0f73f0dc36853d99c2408679aa6706b6489a58
(cherry picked from commit 280091d47054677b358216c8fa0cac106d42a520)
This allows to have a different rule to generate the source.properties
based on the templates and place them in a directory that depends on
the current target CPU ABI. In turn this prevents the build from
mixing different source.props when building different targets.
Change-Id: I4a1d9f47426c94f376947ddae8be9f5549331616