Test more depth/stencil formats in load_store_op_none tests

Test more depth/stencil formats in load_store_op_none tests

Some load_store_op_none tests check some aspects of those operations
work with depth/stencil formats, but they skip formats which only have
depth or stencil aspects. This could be interesting, specially related
to dynamic rendering. This change adds tests that use other formats,
including:

- D16_UNORM, which has mandatory support in the spec.
- S8_UINT, which is the only format having only the stencil aspect.

New tests:
dEQP-VK.*.load_store_op_none.depth_d16_unorm*
dEQP-VK.*.load_store_op_none.depth_d32_sfloat*
dEQP-VK.*.load_store_op_none.stencil_s8_uint*

Components: Vulkan
VK-GL-CTS issue: 3466

Change-Id: I7ce4e8b82a98eb07ffec29b63ccad0fb93759845