prevent ip_address from matching address_pair on update_port

[Aaron Rosen]

Fix left todo in address_pair patch.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/45994

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/45994
Committed: http://github.com/openstack/neutron/commit/ec12ac444cf79eb216a41af15a4a8bfb3f22daff
Submitter: Jenkins
Branch: master

commit ec12ac444cf79eb216a41af15a4a8bfb3f22daff
Author: Aaron Rosen <email address hidden>
Date: Tue Sep 10 20:32:28 2013 -0700

    Prevent update_port ip_address from matching address_pair

    Previously one could update a port to match one of the address_pairs.
    This patch prevents that.

    Fixes bug: 1223646

    Change-Id: Ic8cecfdb83b3fd9d2691bb41e0427cf578577fc8