Add a unit test for remote_prov_utils am: 7a55bb5cf8 am: 3a6cb24f82 am: 0e185b70b4

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15071132

Change-Id: Ie2a79b2077b03d4ffe9610cbee9a7ab3400a591e