Adding @IgnoreUpTo to OemNetworkPreferencesTest

Adding @IgnoreUpTo to OemNetworkPreferencesTest so that it can run as
part of MTS.

Bug: 174268969
Bug: 171505922
Test: atest FrameworksNetTests:android.net.OemNetworkPreferencesTest
Change-Id: If7fb039c2cdb061f803c8a59e826e485e1f1c761
1 file changed