Require VK_EXT_filter_cubic for cubic filtering

Require VK_EXT_filter_cubic for cubic filtering

Make the copy and blit tests for cubic filtering depend on
VK_EXT_filter_cubic to stop them being run on drivers supporting
VK_IMG_filter_cubic.

Affects:
dEQP-VK.api.copy_and_blit.core.blit_image.all_formats.color.*
dEQP-VK.api.copy_and_blit.core.blit_image.all_formats.generate_mipmaps.*
dEQP-VK.api.copy_and_blit.dedicated_allocation.blit_image.all_formats.color.*
dEQP-VK.api.copy_and_blit.dedicated_allocation.blit_image.all_formats.generate_mipmaps.*

Components: Vulkan

VK-GL-CTS issue: 2417

Change-Id: I3b2b689410603d639837bed48fa8f7e924da577c