NEC Plugin: All packet filters are deleted in a port deletion

[Ryota Mibu]

This is a high importance bug in packet filter extension which is in NEC Plugin.

When we deleting a port, the plugin automatically deletes packet filters associated with the port. It is intended behavior. However, the plugin also delete other packet filters. This is due to a mistake of DB filtering. We have to filter entries by "in_port" instead of "port_id".

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/41842

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/41842
Committed: http://github.com/openstack/neutron/commit/6ef28110c0c2b11ec63266e4d22a1b7c75cf7f5f
Submitter: Jenkins
Branch: master

commit 6ef28110c0c2b11ec63266e4d22a1b7c75cf7f5f
Author: Akihiro MOTOKI <email address hidden>
Date: Mon Sep 23 18:03:39 2013 +0900

    Fix port deletion in NEC Plugin

    Cascade on delete from ports.id to packetfitlers.in_port is added
    to ensure packet filter entries associated with a port.
    Also joined query of packetfilter with port query is added
    to avoid additional packetfilter query by port_id.

    Fixes: bug #1212102

    Change-Id: I8a67649f3361480eda6377b1d8a30bebd18aa714