Add CTS for ConnectivityManager#setVpnDefaultForUids()

This test checks
- If the NullPointerException will be thrown or not when the
  given uid ragnes is null.
- If the SecurityException will be thrown or not when the caller
  doesn't have related permission.

Bug: 231749077
Test: atest CtsNetTestCases
      atest CtsNetTestCasesLatestSdk
Change-Id: Ia1e625bc1f791ee9928ba00d76af9979ba52b2db
1 file changed