a2f5292c82
Bring back the "detection" of the said variables, to allow
standalone execution.
Fixes: db8cd8e367 ("glcpp/tests: Convert shell scripts to a python
script")
Cc: Dylan Baker <dylan@pnwbakers.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>