Comment 3 for bug 1348737

Reviewed: https://review.openstack.org/109776
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=596908f8a8aecff06b079147b957c7da3dc7a51b
Submitter: Jenkins
Branch: master

commit 596908f8a8aecff06b079147b957c7da3dc7a51b
Author: rajeev <email address hidden>
Date: Fri Jul 25 18:50:34 2014 -0400

    Improve external gateway update handling

    Once gateway is set, external_gateway_added() was getting called every time
     a router update was received. The check for change in external
    gateway compared previously cached copy of gateway port (ri.ex_gw_port) with
     the one passed in through update router (ri.router['gw_port']).
    The cached copy was already being modified by code so the two values would
    always appear to be different.
    Making the change to compare correctly and remove actions not required
    for gateway update.

    Change-Id: I1a703b327e6c569dfaa8263a222e4bc797e5dbfd
    Closes-Bug: 1348737