Incomplete description of configuration of DPDK datapath in Networking Guide

[Kostiantyn Volenbovskyi]

Hi,
In page https://docs.openstack.org/ocata/networking-guide/config-ovs-dpdk.html there are following issues:
- [X] This doc is inaccurate in this way:
- [ ] This is a doc addition request.
- [ ] I have a fix to the document that I can paste below including example: input and output.

1) the part of configuring datapath_type=netdev/vhostuser_socket_dir in ML2 OVS agent configuration is not described
This is covered in https://docs.openstack.org/developer/neutron/devref/ovs_vhostuser.html and
https://docs.openstack.org/newton/config-reference/networking/samples/openvswitch_agent.ini.html
2) the use of vhost-user multiqueue is not described.
-the configuration of OVS/DPDK that can be referenced:
http://wiki.qemu.org/Documentation/vhost-user-ovs-dpdk

-This can be taken from: https://blueprints.launchpad.net/nova/+spec/libvirt-virtio-net-multiqueue :
    "To control this feature, the following should be set in the flavour extra specs:

    hw:vif_multiqueue_enabled=true|disabled

    This setting can be overriden by the image metadata property if the feature
     is enabled in the extra specs:

    hw_vif_mutliqueue_enabled=true|false"
and command 'ethtool -L eth0 combined <queues_nr>' for guest should be specified.

-----------------------------------
Release: 15.0.0 on 2017-05-07 16:34
SHA: b375e19d5d1e5700cbade5aac09db01dd74bbff5
Source: https://git.openstack.org/cgit/openstack/openstack-manuals/tree/doc/networking-guide/source/config-ovs-dpdk.rst
URL: https://docs.openstack.org/ocata/networking-guide/config-ovs-dpdk.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/464660

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/464660
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=8e700f55d356a701a17ccabbdd1b1b9e8468342c
Submitter: Jenkins
Branch: master

commit 8e700f55d356a701a17ccabbdd1b1b9e8468342c
Author: Konstantin Volenbovskyi (kvolenbo) <email address hidden>
Date: Mon May 15 16:21:57 2017 +0200

    OVS-DPDK integration documentation changed

    Networking guide is changed to reference Neutron configuration
    for OVS-DPDK and configuration for multiqueue virtio-net

    Change-Id: I9da533266ab383ea6bdcf5be15625f73544e257d
    Closes-Bug: 1689508