WifiBackupRestore: Restore allowAutoJoin param

This bit is not updated with the regular WifiConfigManager.addNetwork()
method.

Bug: 150236894
Test: atest android.net.wifi.cts.WifiBackupRestoreTest
Change-Id: Ibcff4b07cee193bb3ffd6448dc2a7dae8d4bdbaf
1 file changed