Merge "WifiDiagnostics: Remove blocking call to readLine()" into rvc-dev am: 7fde9cd3b1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/net/wifi/+/11686182

Change-Id: If3ee74ec390a33183087e4dd0633a499430235e6
tree: a5212c0209d12319c1d54ae0be876e87bd26da92
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg