Test more dynamic vertex input variants

Test more dynamic vertex input variants

This commit reworks the vertex input part of the extended dynamic state
tests to make it more flexible and adds a couple more test variants
checking more complex setups of bindings and attributes.

In addition, it fixes logic op tests so the output image format matches
the output framgent shader interface.

Also, it fixes feature checks for dynamic vertex input, which were only
requiring VK_EXT_vertex_input_dynamic_state while also using features
from VK_EXT_extended_dynamic_state.

New tests:
dEQP-VK.pipeline.extended_dynamic_state.*.vertex_input_no_dyn_stride
dEQP-VK.pipeline.extended_dynamic_state.*.vertex_input_multiple_bindings

Removed test (due to VUID-vkCmdBindVertexBuffers2EXT-pStrides-03363):
dEQP-VK.pipeline.extended_dynamic_state.two_draws_static.vertex_input

Affected tests:
dEQP-VK.pipeline.extended_dynamic_state.*

Components: Vulkan
VK-GL-CTS issue: 2943

Change-Id: I7da95804ffa156c9b32e304457c40c99158ef63c