Add tests for Flexiglass sim pin.

Add SimPinInteractorTest and SimPinRepositoryTest. Also update all of
the test infra to accomodate simpin integration. Update all relevant
tests for upstream CL.

Fixes: 291970178
Flag: NONE
Test: atest SystemUiRoboTest

Change-Id: Ic9989693a5194695a59bbeddcf14f1a56ca888a4
18 files changed