Comment 4 for bug 1721895

Reviewed: https://review.openstack.org/518332
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=c135c5672a2b34a371693fb1222acde17bdd28a4
Submitter: Zuul
Branch: master

commit c135c5672a2b34a371693fb1222acde17bdd28a4
Author: david shaughnessy <email address hidden>
Date: Tue Nov 7 13:25:13 2017 +0000

    broken HybridIptablesHelper function override

    When creating the hybrid firewall helper class the
    _remove_conntrack_entries_from_port_deleted function is
    overloaded, when overloaded it does not have a "self" parameter
    and fails when it's called by the neutron agent.

    This patch adds in the self parameter and adds a test to
    ensure it is correctly overloaded.

    Related-bug: 1721895

    Change-Id: Ifc6c8510f70e9336fbf626db8bbacf206ad0d08c