Test line stipple factor is ignored if not used

Test line stipple factor is ignored if not used

This commit adds a few extra line test variants that check
lineStippleFactor in VkPipelineRasterizationLineStateCreateInfoEXT is
ignored when stippledLineEnable is false. The new tests use both zero
and a large number to check everything continues to work.

New tests:
dEQP-VK.rasterization.primitives.no_stipple.*factor_0
dEQP-VK.rasterization.primitives.no_stipple.*factor_large

Affected tests:
dEQP-VK.rasterization.primitives*

Components: Vulkan
VK-GL-CTS issue: 3009

Change-Id: I6e329e8572cb0bae043119553bd4ea8d5682f660