Implement Neutron OVN Support

[James Denton]

This bug is meant to document changes required to implement Open Virtual Network (OVN) support in OSA.

To be included:

- ovn-northd
- ovn-controller
- Metadata support
- Role changes to facilitate this

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/584067

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/584069

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/584447

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/584067
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_neutron/commit/?id=bc9e068f6c155d354ebecfaac811927ae333456b
Submitter: Zuul
Branch: master

commit bc9e068f6c155d354ebecfaac811927ae333456b
Author: James Denton <email address hidden>
Date: Tue Aug 14 17:23:53 2018 +0000

    Adds networking-ovn support

    This commit provides baseline changes to the os_neutron role
    to support Open Virtual Networking (OVN).

    Change-Id: I9af0a1d70d3381f1e5e074aaf21b15cfb40a7b60
    Implements: networking-ovn support
    Partial-Bug: #1782625

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/584447
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-plugins/commit/?id=bc3e3b074cda33397979a9cb26f4bec866f044cd
Submitter: Zuul
Branch: master

commit bc3e3b074cda33397979a9cb26f4bec866f044cd
Author: James Denton <email address hidden>
Date: Fri Jul 20 17:04:51 2018 +0000

    Updates provider_network plugin to support geneve

    This commit updates the provider_network library to support
    geneve for use with Open Virtual Networking (OVN).

    Change-Id: I770a6a3e08490b7ae74752178e69be43ec484dc5
    Implements: networking-ovn support
    Partial-Bug: #1782625

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/620994

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/584069
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=9ef46ba5ef41ba03e9ca5107274cec3bf456fc3f
Submitter: Zuul
Branch: master

commit 9ef46ba5ef41ba03e9ca5107274cec3bf456fc3f
Author: James Denton <email address hidden>
Date: Thu Jul 19 18:56:29 2018 +0000

    Adds haproxy endpoints for networking-ovn support

    This commit provides baseline changes to the openstack-ansible
    playbooks to support Open Virtual Networking (OVN).

    Change-Id: I0b513d68adc81dcca4b39417e41b2a385117cb18
    Implements: networking-ovn support
    Partial-Bug: #1782625

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/620994
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_neutron/commit/?id=b87e5b1f6147a431a66786a3c9a724904d109077
Submitter: Zuul
Branch: master

commit b87e5b1f6147a431a66786a3c9a724904d109077
Author: James Denton <email address hidden>
Date: Thu Nov 29 19:23:24 2018 +0000

    Install haproxy on ovn-controller nodes

    HAproxy is utilized by the OVN metadata agent and should be installed
    on ovn-controller nodes running the OVN metadata agent. This patch
    installs haproxy on said nodes.

    Change-Id: I8781f5e811ffb291f692e54d9ba56c834902b99a
    Implements: networking-ovn support
    Partial-Bug: #1782625

[James Denton (james-denton)]

OVN support has been there for the last few releases, at least, and will be default in Zed.