Merge vulkan-cts-1.0.2 into aosp/master

Merge vulkan-cts-1.0.2 into aosp/master

Contains following fixes that have been made after vulkan-cts-1.0.2.2:

 * Fix - uniform buffer incorrectly dereferenced
 * Use vkGetInstanceProcAddr(NULL) to load platform funcs
 * Imgtec Waiver for texture_gather*cube*depth32f*
 * Add VK_KHR_incremental_present to the list of allowed device
extensions
 * Use -std=c++03 with GCC and clang
 * Fix GCC 6.3 warnings in vulkan-cts-1.0.2
 * Improve check_build_sanity.py
 * Relax image verification in anisotropic filtering tests
 * Respect maxColorAttachments in image tests
 * Fix SPIR-V generation in dEQP-VK.spirv_assembly
 * Fix - depth/stencil images mandatory only for VK_IMAGE_TYPE_2D
 * Add missing barrier in ssbo layout tests

This merge doesn't match any Vulkan CTS release tag.

Bug: 36899783
Bug: 36817508
Change-Id: I5dff02835e5296e1c25ba67675c06e2261e5c476