AttributeError: 'module' object has no attribute 'get_engine'

[YAMAMOTO Takashi]

eg. http://logs.openstack.org/50/395450/5/check/gate-networking-midonet-python27-db-ubuntu-xenial/7f3d5eb/testr_results.html.gz

ft2.2: midonet.neutron.tests.unit.test_midonet_plugin_v2.TestMidonetDataVersion.test_create_version_StringException: Empty attachments:
  stderr
  stdout

pythonlogging:'': {{{WARNING [oslo_policy.policy] Policies ['update_rbac_policy:target_tenant'] are part of a cyclical reference.}}}

Traceback (most recent call last):
  File "/tmp/openstack/neutron/neutron/tests/base.py", line 126, in func
    return f(self, *args, **kwargs)
  File "midonet/neutron/tests/unit/test_midonet_plugin_v2.py", line 588, in test_create_version
    session = self.get_session()
  File "midonet/neutron/tests/unit/test_midonet_plugin_v2.py", line 583, in get_session
    engine = db_api.get_engine()
AttributeError: 'module' object has no attribute 'get_engine'

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/395450
Committed: https://git.openstack.org/cgit/openstack/networking-midonet/commit/?id=3dfc497daf26f5b8ebce6569e72e40371138b0cc
Submitter: Jenkins
Branch: master

commit 3dfc497daf26f5b8ebce6569e72e40371138b0cc
Author: YAMAMOTO Takashi <email address hidden>
Date: Wed Nov 9 16:51:22 2016 +0900

    Use some definitions from neutron-lib

    The following two unrelated changes are combined
    into this single commit to pass the gate.

    -------------------------------

    Use some definitions from neutron-lib

    Including:
        - convert_to_boolean
        - PORT_STATUS_ACTIVE
        - TAP_DEVICE_PREFIX
        - db_api.get_engine

    Closes-Bug: #1640319
    Closes-Bug: #1641481
    Closes-Bug: #1641494
    Partial-Bug: #1581361

    -------------------------------

    l3_db_midonet: Update after the recent Neutron change. [1]

    [1] I93e4d847f96707b17c4a7dfdb3bbf81d062fe3fb

    Closes-Bug: #1643747
    Related-Bug: #1540844

    -------------------------------

    Change-Id: Ide96124c12c993a3ee0f2353c8201da9a6b5890c

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/networking-midonet 4.0.0 release.