Mount host NVIDIA libraries into device plugin for NVML access

The device plugin needs libnvidia-ml.so to discover GPUs even when using
CDI annotations. Mount /run/opengl-driver/lib (NixOS NVIDIA lib path)
into the pod and set LD_LIBRARY_PATH.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

argocd/manifests/nvidia-device-plugin/daemonset.yaml

@@ -28,6 +28,8 @@ spec:
               value: cdi-annotations
             - name: CDI_ROOT
               value: /var/run/cdi
+            - name: LD_LIBRARY_PATH
+              value: /run/nvidia/lib
           securityContext:
             allowPrivilegeEscalation: false
             capabilities:
@@ -38,6 +40,9 @@ spec:
             - name: cdi-specs
               mountPath: /var/run/cdi
               readOnly: true
+            - name: nvidia-libs
+              mountPath: /run/nvidia/lib
+              readOnly: true
       volumes:
         - name: device-plugins
           hostPath:
@@ -45,3 +50,6 @@ spec:
         - name: cdi-specs
           hostPath:
             path: /var/run/cdi
+        - name: nvidia-libs
+          hostPath:
+            path: /run/opengl-driver/lib