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 am: 419d7be5

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

Change-Id: Id53eed090a443c8e2bce2d8c049f341f37af4261