added nvidia runtime environment variables to zun.conf

[JOUNAIDSoufiane]

Added nvidia runtime environment variables to zun.conf. These are necessary to ensure they are injected into containers that start with runtime nvidia on zun.

Default Specification:

nvidia_require_jetpack= "csv-mounts=all"

• this variable instructs the host to mount all the libraries mentioned above
• ref: https://gitlab.com/nvidia/container-toolkit/container-toolkit/-/issues/11 nvidia_visible_devices= all
• exposes all GPU devices on the host machine to the user container
• ref: https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/docker-specialized.html#gpu-enumeration nvidia_driver_capabilities= all
• allows all Nvidia GPU driver modules to be used by the user container
• ref: https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/1.10.0/user-guide.html#driver-capabilities