Add Ubuntu 24.04 NVIDIA Container Toolkit path

[dholt]

Summary

• add an Ubuntu 24.04+ container-runtime path that installs NVIDIA Container Toolkit from the current libnvidia-container APT repository and configures Docker with nvidia-ctk
• keep the legacy nvidia.nvidia_docker role path for Ubuntu 22.04 and older plus Red Hat family hosts
• refresh Ubuntu 24.04/Noble testing and airgap package mirror docs

Related to #1333.

Validation

• ansible-playbook --syntax-check playbooks/container/nvidia-docker.yml
• ./scripts/deepops/ansible-lint-roles.sh
• make public-sanitize RELEASE=26.07 WORKTREE=<worktree>
• live Ubuntu 24.04.4 GPU server validation:
  • Docker playbook completed: ok=40 changed=10 failed=0
  • NVIDIA driver playbook completed with the proprietary 580 server path on the Pascal test GPU: ok=18 changed=2 failed=0
  • playbooks/container/nvidia-docker.yml completed through the new Container Toolkit role path: ok=21 changed=6 failed=0
  • idempotence rerun completed: ok=18 changed=0 failed=0
  • docker run --gpus=all --rm nvcr.io/nvidia/cuda:12.8.1-base-ubuntu24.04 nvidia-smi passed