Coverage report path should be the parent of test_runner_base_path am:...

Coverage report path should be the parent of test_runner_base_path am: 0ab87e46 am: e3d5db4f am: 71a967a7

Original change: https://android-review.googlesource.com/c/platform/system/bt/+/1839725

Change-Id: Ide33a7690c4cf26f7acdab38425cac5b458c2100