Revert "Disable flaky test testWepNetworkWifiConfigurationSaveLoad" am: 878769604a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/net/wifi/+/11818892

Change-Id: I4aa4f3cd14098c3c207149d10ccedae0ca7a7433
tree: 0a4f6d61be1d819bcefef4667e4dc5e3627c4324
  1. apex/
  2. service/
  3. metrics_pdd_hook.py
  4. PREUPLOAD.cfg