Add documentation to bt_test_utils.py

Bug: b/31040628
Change-Id: Iac8e8a40abef15fedcc51e6214f4014393234e07
(cherry picked from commit ed24997583912a7adf0a5097a7d8075dc8018026)
1 file changed
tree: 670b8fd3220b5e3ce7602d252be9d512e4f3d693
  1. Android.mk
  2. acts/