AttributeError: 'module' object has no attribute 'VIF_TYPE_IOVISOR' seem with gating tests(kilo)

[Muawia Khan]

The following error is seen whenever gating tests "gate-networking-plumgrid-python27" are being run on jenkins infra on Kilo branch:
"AttributeError: 'module' object has no attribute 'VIF_TYPE_IOVISOR' seem with gating tests(kilo)"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/240246

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/240246
Committed: https://git.openstack.org/cgit/openstack/networking-plumgrid/commit/?id=3f40c330c20c71a6bd5968385f337379505ce155
Submitter: Jenkins
Branch: stable/kilo

commit 3f40c330c20c71a6bd5968385f337379505ce155
Author: Muawia Khan <email address hidden>
Date: Thu Oct 29 19:17:56 2015 +0500

    Fix for gating py27 job

    Tests were failing with the following error:
    "AttributeError: 'module' object has no attribute 'VIF_TYPE_IOVISOR"
    Root cause of this issue was that we were cloning neutron master branch
    in requirements.txt for gating/unit tests, and in master branch vendor
    VIF_TYPE_* constants are removed from neutron codebase, hence the fix
    uses stable/kilo branch to be used for unit/gating tests.

    Closes-Bug: #1511351
    Change-Id: I74778159b85799406af2ab12fbeed766199b806a