Refactor test scripts. am: a80a10ef47 am: d4cbdfe5f9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Nearby/+/17227387

Change-Id: I89c54f9c9ae445c1718fdab29311596c5b0c8e26
tree: c09582e982ee218bd99d42354ab3c12e62e31eea
  1. nearby/