Porting relay controllers in ACTS from aosp

The ACTS relay controoler lin is submitted at
https://android.googlesource.com/platform/tools/test/connectivity/+/a926f25e2baa322271ba8504147a4e987d4b5bb8
Porting the lib into oc-dev

Bug: 62190793
Test: acts/framework/tests/acts_relay_device_test.py
Test: ./RelayDeviceSampleTest -c <local config>
Change-Id: I6440d056155a8c5c346624481ba41c3b5a340639
Merged-In: I8fb095417e2d8da03dcfaf52b430d13f1d3aa74e
17 files changed
tree: cd952c53332051bbec30583909d75b29fb61d0e7
  1. acts/
  2. tools/
  3. Android.mk
  4. PREUPLOAD.cfg