[ICL] piglit.spec.arb_compute_shader.render-and-compute GPU hang under load

Submitted by Mark Janes `@majanes`

Assigned to Anuj Phogat @aphogat

This test passes reliably by itself.

However, if you run the test while the piglit suite is running, it will quickly generate a gpu hang.

To reproduce: in one window, execute the test in a loop:

$ for ((;;)) do arb_compute_shader-render-and-compute -auto -fbo; done

Run dmesg -w to watch for gpu hangs

In a second window, run piglit. GPU Hang will be produced within a few tests.

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