Add image tag in "pause" container of nvidia driver installer. (#4247)

roles/kubernetes-apps/container_engine_accelerator/nvidia_gpu/templates/nvidia-driver-install-daemonset.yml.j2

@@ -74,5 +74,5 @@ spec:
         - name: root-mount
           mountPath: /root
       containers:
-      - image: "{{ pod_infra_image_repo }}"
+      - image: "{{ pod_infra_image_repo }}:{{ pod_infra_image_tag }}"
         name: pause