Vulkan: enable the rest of dEQP tests in fbo.render.* Vulkan does not support separate depth and stencil attachments. Adding this check to checkStatus skips the relevant tests to that. There was also a bug in FramebufferVk::clear where we were not checking the number of bits for depth/stencil attachments before setting the aspects for clearing. Bug: angleproject:2597 Change-Id: Iabe9f77a51fc7aca08b8faf3cecc3df9f99a7f1e Reviewed-on: https://chromium-review.googlesource.com/1107847 Commit-Queue: Luc Ferron <lucferron@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>