Decouple host drivers and shutdown

[Arc676]

Description

Decouple the host shutdown flag from the host driver flag. This adds support for systems that have the NVIDIA drivers installed locally but do not run systemd, for example Talos. The user can install the drivers via system extension but set WITH_SHUTDOWN_HOST_GPU_CLIENTS=false via Helm values to disable all code paths in the MIG manager that depend on systemd.

This requires a change to the chart because the entrypoint for the MIG manager is managed by the operator and the variable is set here. The user can't override the value or modify the ConfigMap; the former approach would have no effect and the latter approach would be immediately reverted by the operator.

See discussions in NVIDIA/mig-parted#382 and the parent issue NVIDIA/mig-parted#356.

Checklist

• No secrets, sensitive information, or unrelated changes

• Lint checks passing (make lint)

  • Skipped since no Go changes

• Generated assets in-sync (make validate-generated-assets)

  • Didn't work, although not sure why

     - Generating CRDs from the codebase
     $PATH_TO_REPO/bin/controller-gen rbac:roleName=gpu-operator-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
     -: build constraints exclude all Go files in $PATH_TO_REPO/vendor/github.com/cyphar/filepath-securejoin/pathrs-lite
     Error: not all generators ran successfully
     run `controller-gen rbac:roleName=gpu-operator-role crd webhook paths=./... output:crd:artifacts:config=config/crd/bases -w` to see all available markers, or `controller-gen rbac:roleName=gpu-operator-role crd webhook paths=./... output:crd:artifacts:config=config/crd/bases -h` for usage
     make: *** [manifests] Error 1
    

• Go mod artifacts in-sync (make validate-modules)

  • Again, no code changes

• Test cases are added for new code paths

  • No new code paths

Testing

Tested manually on a Kubernetes cluster running the aforementioned patch.

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[myeolenv]

Thanks for the contribution. We will review this PR.