[automerger skipped] [Testing] Use AndroidJUnit4 instead in MobileNetworkUtilsTest am: 2e763e52 am: fec00ac4 am: f0ea678e -s ours

am skip reason: Change-Id I1778832b0602062adb24928343c0c1d0e525942d with SHA-1 fc29bded is in history

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/1614986

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I0171105870be5c18de6f38578158c21c6ef80883