Add kubelet-1.6 to google-node dashboard (#2724)
Add kubelet-1.6 to google-node dashboard (#2724)


GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid,GoogleCloudPlatform/testgrid