Fix use of sparse binding queue on default context

Fix use of sparse binding queue on default context

Avoid trying to create two separate queues
when the queueIndex and sparseQueueIndex are the same,
as this violates valid usage which states:
"The queueFamilyIndex member of each element of pQueueCreateInfos
 must be unique within pQueueCreateInfos"

Affects:
	All vulkan tests
The forerunner change claimed it only affected the following specifically:
	dEQP-VK.texture.shadow.*
	dEQP-VK.renderpass.sparserendertarget.*

Component: Vuklan
VK-GL-CTS issue: 898, 964

Change-Id: I342e11f9a63eab875336b8078890e677a5d29a2d