Comment 8 for bug 1692131

Reviewed: https://review.openstack.org/482510
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=f8af1bec4e1abb783b79277e5803c969a1bb27d0
Submitter: Zuul
Branch: master

commit f8af1bec4e1abb783b79277e5803c969a1bb27d0
Author: Cao Xuan Hoang <email address hidden>
Date: Tue Jul 11 17:49:24 2017 +0700

    [doc] Support networking guide for VPNaaS

    Current networking docs is lacking VPNaaS.
    This patch addresses the gap and improves docs as
    discussed in Boston summit.

    Closes-bug: 1692131
    Change-Id: Id59795ea25a4af171a254fc0da55bb767580eb5d