Disable conflicting fragment shading rate features

Disable conflicting fragment shading rate features

Features of VK_EXT_fragment_density_map and VK_NV_shading_rate_image cannot
be enabled at the same time as features of VK_KHR_fragment_shading_rate.

Instead if the VK_KHR_fragment_shading_rate features are enabled then
disable the VK_EXT_fragment_density_map and VK_NV_shading_rate_image features
and use a temporary device with them enabled for testing.

Components: Vulkan, Framework

VK-GL-CTS Issue: 2665

Affects: *

Change-Id: I544c021ed963bd453635283282a6a272383e448e
(cherry picked from commit 05c7485f7970f363e0fd2781cec980b95c3d3714)