Addressing review from cnauroth

gpu/install_gpu_driver.sh:
* use the same retry arguments in all calls to curl
* correct 12.3's driver and sub-version
* improve logic for pause as other workers perform build
* remove call to undefined clear_nvsmi_cache
* move closing "fi" to line of its own
* added comments for unclear logic
* removed commented code
* remove unused curl for latest driver version

gpu/test_gpu.py
* removed excess test
* added comment about numa node selection
* removed skips of rocky9 ; 2.2.44-rocky9 build succeeds