In some cases the file paths passed to crosvm for execution do not point
to dEQP binaries, but can be wrapper scripts, like deqp-runner.sh.
Detect such cases and skip changing the working directory.
Additionally, use the POSIX compliant command substitution syntax
instead of the obsolete variant based on backquotes.
Fixes: 81f25d8f27 ("virgl/ci: Run each dEQP instance in its own VM")
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14413>
9f0be629cd