Comment 2 for bug 1499821

Reviewed: https://review.openstack.org/227982
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=9c3e3a0fcee012ee0187b19931d63927379a621f
Submitter: Jenkins
Branch: master

commit 9c3e3a0fcee012ee0187b19931d63927379a621f
Author: Assaf Muller <email address hidden>
Date: Fri Sep 25 14:20:21 2015 -0400

    Handle empty bridge case in OVSBridge.get_ports_attributes

    Before this patch, get_ports_attributes would call
    get_port_name_list. In the case of an empty bridge,
    get_port_name_list would return an empty list and feed that
    in to ovsdb.db_list, thereby returning all ports instead of
    no ports.

    Change-Id: I5a91028c59d71943b7cef86a94fa6ab1cc3d667c
    Closes-Bug: #1499821