Add support for the new DPDK configuration mechanism In OVS 2.6

[Mikhail Chernik]

Starting from OVS 2.6, DPDK options changed to be more consistent. In older versions part of the options was passed via command line and part via OVS database. Currently all options are is OVS database.

In order to run OVS 2.6.x with DPDK following changes are required:

   * Variable DPDK_OPTS in /etc/default/openvswitch-switch is not used any more.
   * Parameters from the DPDK_OPTS are moved into OVS configuration DB, table Open_vSwitch, parameter other_config (same place where pmd-cpu-mask option reside)
   * Parameter names changed:
     --socket-mem => dpdk-socket-mem
     --dpdk => dpdk-init=true
      -c XXX => dpdk-lcore-mask
      -n XXX => dpdk-extra=" -n XXX"

Example of "old" config:
export DPDK_OPTS="--dpdk -c 0x1 -n 2 --socket-mem 1024,1024"
other_config : {pmd-cpu-mask="0x300002"}

Example of new config:
other_config : {dpdk-extra=" -n 2", dpdk-init="true", dpdk-lcore-mask="0x1", dpdk-socket-mem="1024,1024", pmd-cpu-mask="0x300002"}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/404739

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/404739
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=2bcebb8b8b6b32d9639a938fb0939532472787c9
Submitter: Jenkins
Branch: master

commit 2bcebb8b8b6b32d9639a938fb0939532472787c9
Author: Michael Polenchuk <email address hidden>
Date: Wed Nov 30 14:56:31 2016 +0300

    Conform dpdk settings to ovs 2.6

    Options from the DPDK_OPTS env variable
    (command line) are shifted into ovsdb.

    Change-Id: I3cc004111998b2ae23f04145a1803e5143b0d3b4
    Closes-Bug: #1644802

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/407526

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/newton
Review: https://review.openstack.org/408024

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/408024
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=a6bffc8e9666bd66597e1f0d7b7597fa2a50de6d
Submitter: Jenkins
Branch: stable/newton

commit a6bffc8e9666bd66597e1f0d7b7597fa2a50de6d
Author: Michael Polenchuk <email address hidden>
Date: Wed Nov 30 14:56:31 2016 +0300

    Conform dpdk settings to ovs 2.6

    Options from the DPDK_OPTS env variable
    (command line) are shifted into ovsdb.

    Change-Id: I3cc004111998b2ae23f04145a1803e5143b0d3b4
    Closes-Bug: #1644802
    (cherry picked from commit 2bcebb8b8b6b32d9639a938fb0939532472787c9)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/407526
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=0a1a86627f261f69f7651e1a3a3cf9d23502cd74
Submitter: Jenkins
Branch: stable/mitaka

commit 0a1a86627f261f69f7651e1a3a3cf9d23502cd74
Author: Michael Polenchuk <email address hidden>
Date: Wed Nov 30 14:56:31 2016 +0300

    Conform dpdk settings to ovs 2.6

    Options from the DPDK_OPTS env variable
    (command line) are shifted into ovsdb.

    Change-Id: I3cc004111998b2ae23f04145a1803e5143b0d3b4
    Closes-Bug: #1644802

[TatyanaGladysheva (tgladysheva)]

Verified on 9.2 snapshot #627.

Actual results:
From compute node of cluster with DPDK feature:
root@node-6:~# ovs-vsctl list open_vswitch | fgrep other_config
other_config : {dpdk-extra="-n 2 --vhost-owner libvirt-qemu:kvm --vhost-perm 0664", dpdk-init="true", dpdk-lcore-mask="0x1", dpdk-socket-mem="1024"}

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/fuel-library 11.0.0.0rc1 release candidate.

[TatyanaGladysheva (tgladysheva)]

Verified on 10.0 build #1543.

Actual results:
From compute node of cluster with DPDK feature:
root@node-11:~# ovs-vsctl list open_vswitch | fgrep other_config
other_config : {dpdk-extra="-n 2 --vhost-owner libvirt-qemu:kvm --vhost-perm 0664", dpdk-init="true", dpdk-lcore-mask="0x1", dpdk-socket-mem="1024"}