Fix bug that used previously used vertex bindings. Now we
use the current program mask to only initialize the vulkan
pipeline with the active vertex input bindings.

+ adjust dEQP expectations

Bug: angleproject:2334
Change-Id: Ie6176eee99f87dc7a95f664d28e8312b9cb274bc
Reviewed-on: https://chromium-review.googlesource.com/902434Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Luc Ferron <lucferron@chromium.org>