WifiMigrationTest: Add test for WifiMigration.loadFromSettings

This assumes that OEM's were using the same AOSP @Settings.Global
values to persist the data (which is probably true on all devices).

Bug: 150236894
Test: atest android.net.wifi.cts.WifiMigrationTest
Change-Id: I7e80730c81e6ed4773cf187e4eb1018528edb158
1 file changed
tree: f8ea470ebd6879d33f04304bef9635e4313224e4
  1. tests/