message: Verionize model zoo with opset version
diff: @@ -6,6 +6,7 @@ from __future__ import unicode_literals
  from collections import namedtuple
  import sys
  +import onnx.defs
  from ..utils import import_recursive
  TestCase = namedtuple('TestCase', [
  @@ -33,7 +34,8 @@ def expect(model, inputs, outputs, name=None):
  ))
  -BASE_URL = 'https://s3.amazonaws.com/download.onnx/models/latest'
  +BASE_URL = 'https://s3.amazonaws.com/download.onnx/models/opset_{}'.format(
  + onnx.defs.onnx_opset_version())
  def collect_testcases():
  