Enable LBaaS v2 API

[Major Hayden]

OSA's liberty/mitaka branches have LBaaS v1 enabled at this time. However, LBaaS v2 is stable in both branches and could be enabled if needed.

The work for this fix looks like this:

* Add a container for octavia-api, octavia-worker, octavia-housekeeping, and octavia-health-manager
* Don't use neutron-lbaas-agent or neutron-lbaasv2-agent
* Configure a new service-plugin for neutron.conf to use octavia for LB's

[Major Hayden (rackerhacker)]

It would be nice to keep LBaaS v1/v2 operating at the same time as an option.

I plan to get a spec started for this as soon as possible.

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/273749

[Bjoern (bjoern-t)]

AFAIK LBAASv2 can be used with the lbaas-agent and haproxy without https://review.openstack.org/#/c/273749/.
If this bug primarily addresses the Octavia driver, then we should rename the subject since I find it misleading.
Any comments ?

[Major Hayden (rackerhacker)]

True, but the lbaasv2-agent is not being maintained any longer. I'll rename the bug. ;)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/273749
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-specs/commit/?id=b299198af57abdf82b73c9f239bb95bb12f70d7a
Submitter: Jenkins
Branch: master

commit b299198af57abdf82b73c9f239bb95bb12f70d7a
Author: Major Hayden <email address hidden>
Date: Mon Feb 1 08:45:02 2016 -0600

    Spec: LBaaSv2/Octavia

    This spec is for adding LBaaSv2/Octavia support to OpenStack-Ansible.

    Related-Bug: 1538208

    Change-Id: If5ff7a327342ef4efd85b134a2f2aaf0b92aad4b

[Major Hayden (rackerhacker)]

Reviews:

https://review.openstack.org/#/c/287243/
https://review.openstack.org/#/c/287237/