When configured, MTU not set for fpr and rfp interfaces on DVR

[Rajeev Grover]

The network_device_mtu can be set for a non-default MTU size. Currently network_device_mtu configuration parameter is not honored for interfaces between a router namespace and the fip namespace for the DVR.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/162312

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/162312
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=d6f1fb67d2ee7b5d138ab952a1d6ae7673aeab77
Submitter: Jenkins
Branch: master

commit d6f1fb67d2ee7b5d138ab952a1d6ae7673aeab77
Author: rajeev <email address hidden>
Date: Fri Mar 6 10:02:30 2015 -0500

    If configured, set the MTU for fpr/rfp intefaces

    if network_device_mtu parameter is configured, set the MTU for
    fpr and rfp interfaces to the value specified by the parameter
    at the time of creation of these interfaces.

    Enhanced DVR functional test to verify MTU gets
    set for the fpr/rfp interfaces.

    Co-Authored-By: Adolfo Duarte <email address hidden>
    Closes-bug: #1429162
    Change-Id: Ie41122d1f7306dfd3debbbb8dbf2ecabf716dcb8

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: neutron-pecan
Review: https://review.openstack.org/185072