Add shell commands to test Wifi handling of emergency call/callback mode

These commands require root.

Bug: 174542866
Test: atest FrameworksWifiTests
Test: adb root ; adb shell cmd wifi set-emergency-callback-mode enabled
Change-Id: I6bdf56b1781898a7a6f4d870609105202e4a9c04
3 files changed
tree: 932ed60fc673f6af0bb8c9404769795199360224
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg