vts camera characteristtics: add tests for system camera restrictions.

The system camera kind of physical cameras which are public, should be the same as the
system camera kind of the logical cameras they back.

The system camera kinds of all logical cameras that share the same
hidden physical cameras must be the same.

Bug: 152053830

Test: VtsHalCameraProviderV2_4TargetTest
      --gtest_filter=PerInstance/CameraHidlTest.getCameraCharacter*

Test: VtsHalCameraProviderV2_4TargetTest
      --gtest_filter=PerInstance/CameraHidlTest.systemCamera*

Change-Id: Iba07a6aa4a5fb465e9e0c4d0adedf6becaba7d14
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>