Fix a bug in the gpu device plugin where not all devices were registered.

Refer to GoogleCloudPlatform/container-engine-accelerators#110

Author: chardch

cluster/addons/device-plugins/nvidia-gpu/daemonset.yaml

@@ -38,7 +38,7 @@ spec:
         hostPath:
           path: /dev
       containers:
-      - image: "k8s.gcr.io/nvidia-gpu-device-plugin@sha256:d18b678437fedc4ec4211c20b3e5469a137a44f989da43dc275e4f2678170db4"
+      - image: "k8s.gcr.io/nvidia-gpu-device-plugin@sha256:08509a36233c5096bb273a492251a9a5ca28558ab36d74007ca2a9d3f0b61e1d"
         command: ["/usr/bin/nvidia-gpu-device-plugin", "-logtostderr"]
         name: nvidia-gpu-device-plugin
         resources: