tests: Round out object-tracker layer validation tests
tests: Round out object-tracker layer validation tests

Change-Id: I6aad451a44cf2053b078eca98adca6b72acbd0a0

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools