Revert "Revert "Adding CarDrivingStateMonitor to the lib""

This reverts commit 050cb3ea.

Reason for revert:
We have found that by updating the Android.mk in the robolectric package
for the lib the missing class issue goes away.

Test: Ran tests locally
Change-Id: Ib1cf4ae7d980a7d3e966289165562e16fc8afb5e