gitlab-ci: Automated testing with OpenGL traces

Introduce automated testing of Mesa by replaying traces with Renderdoc
or Apitrace.

For now only LLVMPipe is tested, but other drivers can be tested if
there's runners with the necessary hardware.

Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/2935>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/2935>
19 files changed