Also modifies the ProgramVk to initialize the Pipeline and Desriptor
Set layouts with driver uniforms enabled.

Bug: angleproject:2717
Change-Id: I24f7bf6f89b450d1dcb62dcfa7411555ebe3a937
Reviewed-on: https://chromium-review.googlesource.com/1131568Reviewed-by: Luc Ferron <lucferron@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>