NVIDIA Driver Integration

[runleveldev]

Containers running on nodes that support NVIDIA drivers should use the nvidia-container-toolkit to provide proper driver integration. This feature should include

1. Admin documentation for
   1. Installing nvidia-driver from official Debian repos
   2. Installing nvidia-container-toolkit from NVIDIA sources (link to NVIDIA docs)
   3. Configuring the /usr/share/lxc/hooks/nvida hook script for API use by symlinking to /var/lib/vz/snippets (idk is this the best way?)
2. Container creator updates to
   1. Identify NVIDIA nodes (boolean in Nodes model? autodetected based on hook script presence?)
   2. Add the NVIDIA_VISIBLE_DEVICES=all and NVIDIA_DRIVER_CAPABILITIES=utility compute environment variables + the hook script to containers created on NVIDIA nodes.
   3. Boolean in Containers model "GPU Required" to enforce being created on a Node with a GPU? (Unnessecary if GPU Nodes are in their own sites, but nessecary if we have mixed sites, would require the boolean in the Nodes model rather than autodetection)