Commit 782271f5db2e6fc43b04d12c9e03f4dda2fe043e breaks python 3 tests

[Gary Kotton]

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    b'Traceback (most recent call last):'
    b' File "/home/gkotton/vmware-nsx/.tox/py34/lib/python3.4/site-packages/networking_l2gw/tests/unit/db/test_l2gw_db.py", line 167, in test_l2_gateway_create_delete_with_seg_id_0'
    b' self.assertEqual([seg_id], result_interface_seg_id)'
    b' File "/home/gkotton/vmware-nsx/.tox/py34/lib/python3.4/site-packages/testtools/testcase.py", line 411, in assertEqual'
    b' self.assertThat(observed, matcher, message)'
    b' File "/home/gkotton/vmware-nsx/.tox/py34/lib/python3.4/site-packages/testtools/testcase.py", line 498, in assertThat'
    b' raise mismatch_error'
    b'testtools.matchers._impl.MismatchError: [0] != <map object at 0x7ff075407710>'
    b''

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/346638
Committed: https://git.openstack.org/cgit/openstack/networking-l2gw/commit/?id=8d53fea503cd7a7c633f0d3b36170bfb487e0c3f
Submitter: Jenkins
Branch: master

commit 8d53fea503cd7a7c633f0d3b36170bfb487e0c3f
Author: Gary Kotton <email address hidden>
Date: Mon Jul 25 01:10:31 2016 -0700

    Fix issues with Python 3 tests

    Commit 782271f5db2e6fc43b04d12c9e03f4dda2fe043e broke
    python 3 tests.

    Change-Id: Id1ed913dbf81e3bed22a92313109d87f3993c713
    Closes-bug: #1606146