Add a tzdata test exports to be consumed by users of tzdata prebuilts. am: d79ea5826b

Original change: https://android-review.googlesource.com/c/platform/system/timezone/+/1545427

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I509f32a5290ae1df91f6f11f5a1b9ba2502c40b1