Test files now trigger rebuilds of ACTS

ACTS will now also build locally with `m acts` if you have
been doing development with `sudo python setup.py develop`.

Bug: 67874732
Test: `m acts`, ran SampleTest from acts artifact.
Change-Id: Ic6f7c6453091eb868065e631c08d651283a3ac2f
1 file changed
tree: 9453e66ea6884920e997f060b5cb9facc0a26a27
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. PREUPLOAD.cfg