test/arb_compute_shader: Correctness of draw after compute

Test verifies that after compute workload geometry renders fine.
This exercises hardware issue in Intel's GEN9 GPU which resulted
in geometry flickering see https://bugs.freedesktop.org/show_bug.cgi?id=109630
There is no guarantied way to reproduce the issue but to run the
core part of the test many times.

Signed-off-by: Andrii Kryvytskyi <andrii.o.kryvytskyi@globallogic.com>
Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <mesa/piglit!117>
10 jobs for test/flickering_geometry_while_using_compute_shaders in 36 minutes and 14 seconds (queued for 3 seconds)
latest
Status Name Job ID Coverage
  Container
passed debian #13867240

00:00:16

passed windows #13867241
windows shell 1809

00:26:31

 
  Build
passed build-debian #13867242

00:03:56

passed build-debian-mingw: [mingw32] #13867243

00:04:10

passed build-debian-mingw: [mingw64] #13867244

00:04:06

passed build-windows #13867245
windows docker 1809

00:09:30

passed py.test #13867246

00:03:22

passed tox: [3, 6] #13867247

00:06:15

passed tox: [3, 7] #13867248

00:03:31

passed tox: [3, 8] #13867249

00:03:03