Comment 3 for bug 1174111

Reviewed: https://review.openstack.org/27660
Committed: http://github.com/openstack/quantum/commit/6f01194e9c30afc2656cef9b15fea5ae688e93d7
Submitter: Jenkins
Branch: master

commit 6f01194e9c30afc2656cef9b15fea5ae688e93d7
Author: Salvatore Orlando <email address hidden>
Date: Mon Apr 29 01:40:47 2013 +0200

    Perform a joined query for ports and security group associations

    bug 1174111

    Instead of loading security group associations with a separate query
    each time a port is loaded from the database, perform the load operation
    with a join using a joined sqlalchemy relationship.
    Also, this patch removes the need for invoking the mixin method
    'extend_port_dict_security_group' from the plugin code.

    Change-Id: I40b22281d45ff4f4bf8149211883799a9051c1a0