Camera VTS: Add a minimal test for secure only cameras.

Bug: 156749607

Test: VtsHalCameraProviderV2_4TargetTest
      --gtest_filter=PerInstance/CameraHidlTest.processSecureCaptureRequest* on device which
      SECURE_IMAGE_DATA.

Change-Id: I57f6210b69b383dc4f43cc4ee8272050a0432541
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>