Update to TF 1.9 and Python 3
Update to TF 1.9 and Python 3

turbomanage/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,turbomanage/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,turbomanage/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,turbomanage/training-data-analyst,GoogleCloudPlatform/training-data-analyst,GoogleCloudPlatform/training-data-analyst,turbomanage/training-data-analyst,turbomanage/training-data-analyst,turbomanage/training-data-analyst,turbomanage/training-data-analyst