Comment 1 for bug 1757087

TB example:
ft1.3: neutron.tests.unit.objects.qos.test_policy.QosPolicyDbObjectTestCase.test_object_version_degradation_1_2_to_1_1_StringException: Traceback (most recent call last):
  File "neutron/tests/base.py", line 118, in func
    return f(self, *args, **kwargs)
  File "neutron/tests/unit/objects/qos/test_policy.py", line 468, in test_object_version_degradation_1_2_to_1_1
    policy_obj_v1_1 = self._policy_through_version(policy_obj, '1.1')
  File "neutron/tests/unit/objects/qos/test_policy.py", line 426, in _policy_through_version
    return policy.QosPolicy.clean_obj_from_primitive(primitive)
  File "neutron/objects/base.py", line 148, in clean_obj_from_primitive
    obj = cls.obj_from_primitive(primitive, context)
  File "/home/zuul/src/git.openstack.org/openstack/neutron/.tox/py27/local/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 414, in obj_from_primitive
    objclass = cls.obj_class_from_name(objname, objver)
  File "/home/zuul/src/git.openstack.org/openstack/neutron/.tox/py27/local/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 377, in obj_class_from_name
    vutils.is_compatible(objver, objclass.VERSION)):
  File "/home/zuul/src/git.openstack.org/openstack/neutron/.tox/py27/local/lib/python2.7/site-packages/oslo_utils/versionutils.py", line 45, in is_compatible
    if same_major and (requested_parts[0] != current_parts[0]):
TypeError: 'Version' object does not support indexing