1. Use AndroidJunit4 instead of RobolectricTestRunner
2. Use ApplicationProvider instead of RuntimeEnvironment to get context
3. Change the Copy Right
4. Create the real object for PhoneAccountHandle and ComponentName
Bug: 164989754
Test: atest -c MobileNetworkUtilsTest
Change-Id: I1778832b0602062adb24928343c0c1d0e525942d