Limit number of stages for Angle D3D for GLPrograms test

Bug: skia:4717
Change-Id: I5ea613311d2c346bc45875040665a121b455f674
Reviewed-on: https://skia-review.googlesource.com/20228
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
4 files changed