Comment 2 for bug 1538767

Reviewed: https://review.openstack.org/273278
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=3d5d378769f0715e3254ac00b6f091a6f9f6960b
Submitter: Jenkins
Branch: master

commit 3d5d378769f0715e3254ac00b6f091a6f9f6960b
Author: Cedric Brandily <email address hidden>
Date: Wed Jan 27 23:58:18 2016 +0100

    Allow non-admins to define "external" extra-routes

    Currently non-admin users can create extra-routes when the nexthop is on
    router-interfaces subnets but not on external-network subnet. Indeed
    user permissions are used to get router ports in order to validate
    nexthops BUT non-admin users don't "see" router port on its external
    network.

    This change uses an elevated context instead of user context to enable
    non-admins to create "external" extra-routes.

    APIImpact
    Closes-Bug: #1538767
    Change-Id: I08b1d8586a4cd241a3589e8cb7151b77ab679124