Merge "Revert "Use mockito-extended in FrameworksNetTests"" am: a6c06af0fa am: 6f6035a29e am: 9134dac0b1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1734372

Change-Id: Ie28db4a25144eb558bb3c7c72e24c66a38091e2c