Label /data/asan/* libs as system_lib_file.

This patch gives global access to asan libraries. This is not ideal since the
labeling is not symmetric with standard locations, but this approach is easy to
maintain.

Fixes: 117555408
Test: processes on asan builds load /data/asan/* libs correctly
Change-Id: If54558c1808d8b16e06073c150c9f3eb358dda67