Comment 16 for bug 1699085

Reviewed: https://review.openstack.org/498297
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=f923d8d90614091aa2f63ea233fbc8e3b33c2a83
Submitter: Jenkins
Branch: stable/pike

commit f923d8d90614091aa2f63ea233fbc8e3b33c2a83
Author: Numan Siddique <email address hidden>
Date: Thu Jul 13 20:46:45 2017 +0530

    Support deploying OVN as container services

    This patch adds the support to containerize OVN services for the
    base profile.

    OVN db servers do not support active-active mode yet. It does support
    master-slave mode supported through pacemaker, which will be supported
    in a later patch.

    Presently the tripleo container framework doesn't allow to start a
    container in only controller 0 (or bootstrap node). OVN db servers and
    ovn-northd are started on all the controllers, but only the OVN db
    servers running in the boot strap controller are configured to listen
    on the tcp ports 6641 and 6642. OVN neutron mechanism driver
    and ovn-controller's use the ovn_dbs_vip to connect to the OVN db servers.
    Haproxy configures all the controllers as back ends, but only OVN db
    servers running on controller 0 respond since only they are configured
    properly.

    The OVN containers running on other controller nodes do not interact
    any way, but are wasteful resources.

    This patch also adds the scenario007-multinode-containers CI template.

    Partial-bug: #1699085
    Change-Id: I98b85191cc1fd8c2b166924044d704e79a4c4c8a
    (cherry picked from commit e7cd03d2f0fcd8e3069246ced94f1a83869b8bea)