Comment 2 for bug 1571523

Reviewed: https://review.openstack.org/307628
Committed: https://git.openstack.org/cgit/openstack/dragonflow/commit/?id=dc7ae208fa41320b409e1949ed70a67142f67e3f
Submitter: Jenkins
Branch: master

commit dc7ae208fa41320b409e1949ed70a67142f67e3f
Author: yuanwei <email address hidden>
Date: Tue Apr 19 15:22:58 2016 +0800

    Security group app support port update event

    This patch intend to add security group app the support to port update
    events. To doing this, I divided "logical_port_created" event from
    "logical_port_updated" event in api_nb.py, added "update_local_port" and
    "update_remote_port" notify event type in df_db_notifier.py, and added port
    update event process in sg_app.py.

    Closes-Bug: 1571523
    Change-Id: I38ccb4f3f761a20fd9f269367d3097240d5d9bc7