Fix remote testbed setup for Android devices

This CL has below changes:
- For each remote Android device, create independent ssh tunnel
  for adb to manipulate it. This will prevent other devices cannot
  be controlled by adb when one device closing the ssh tunnel if
  they share the same ssh tunnel.
- Fix the issue that the local host's port doesn't be handled
  properly.

Bug: 112521767
Test: Run WifiManagerTest on local testbed and remote testbed
Change-Id: I895ae1810c0df6235590ed4f375b34f9c6d22779
2 files changed
tree: 21e0ceb64a3d061dd09d88eb35b4ad6d2697ad6a
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. PREUPLOAD.cfg