Add test coverage for the --age parameter to apf_run. am: 82f4e345ae am: ac34a46fa7 am: bbdcaffd33 am: ce58ba53c1 am: 7805a4ee04

Original change: https://android-review.googlesource.com/c/platform/hardware/google/apf/+/1358484

Change-Id: I4643cb803f0955f3d1ecc05c8ed6a7efae88c1aa