NVIDIA / gpu-operator / 33010103564

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Skip device plugin alert when devicePlugin is disabled in ClusterPolicy

When devicePlugin.enabled is set to false in the ClusterPolicy, the
nvidia-node-status-exporter still monitors the device_plugin_devices_total
metric which reports 0 (since no device plugin pods are running). This
triggers a false positive GPUOperatorNodeDeploymentFailed alert.

Fix: The operator now injects a DEVICE_PLUGIN_ENABLED env var into the
node-status-exporter daemonset based on the ClusterPolicy. When set to
"false", the exporter skips device plugin validation entirely, so the
metric is never emitted and the alert does not fire.

Fixes: https://github.com/NVIDIA/gpu-operator/issues/2237

Signed-off-by: Harshal Patil <12152047+harche@users.noreply.github.com>

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