Export BTS library(setupcompat_bts) am: 7cfd1d6501

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/setupcompat/+/24053006

Change-Id: I3fbb7f11f61de8568a419c8ed3911a5bee5812ab
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>