Split descriptor set indexing render pass workload

Split descriptor set indexing render pass workload

The render pass workload for descriptor set indexing tests should be
split into multiple submissions to prevent timeouts observed in tests
for the VK_DESCRIPTOR_TYPE_SAMPLER,
VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT,
VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER and
VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE descriptor types.

Affects: dEQP-VK.descriptor_indexing*

Components: Vulkan

VK-GL-CTS Issue: 2026

Change-Id: I3b4876ec204fe1c1ebf174e06328653f0a5532d3