L3 agent uses deprecated root_helper option

[Cedric Brandily]

L3 agent uses deprecated root_helper option through self.conf.root_helper in neutron.agent.l3_agent.L3NATAgent._update_routing_table instead of using self.root_helper (result of neutron.agent.common.config.get_root_helper.

It implies if AGENT/root_helper option is configured and root_helper is not configured, extra routes are not pushed in routers.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/82746

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/82746
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=f85f240cabb0a7cc1adb3fa1c3139984e8e30d4c
Submitter: Jenkins
Branch: master

commit f85f240cabb0a7cc1adb3fa1c3139984e8e30d4c
Author: Cedric Brandily <email address hidden>
Date: Mon Mar 24 23:03:15 2014 +0100

    Replace a usage of the deprecated root_helper option

    This change replaces a usage of the deprecated root_helper option
    by the usage of get_root_helper result.

    Change-Id: Icfc698243784557cbf987a817c13d0b80969e5d3
    Closes-Bug: #1297145