Add user-supplied arguments in log_handler

Sync from Oslo, change-id: I91289cc4a60f5dab89bca852e6f52b4b83831e47

When using PublishErrorsHandler, it will missing user-supplied
arguments. For example, do LOG.info("blabla %s", "foo"), the
payload only contains "blabla %s", but we expect it like "blabla foo".

Change-Id: I9e5515da31a04b82d49e406bc6b246f940fb73fc
Change firewall to DOWN when admin state down

Currently firewall remains in status "ACTIVE" after admin state
is changed to DOWN.

This fix sets firewall status to "DOWN" if admin state is updated
from "UP" to "DOWN". "DOWN" status is used by other network resources
so use "DOWN" to keep consistent.

Change-Id: If316b114c4df78368b43c2a15a820bb1177b3a54
Closes-Bug: 1279213
Updated from global requirements

Change-Id: Idafb224b0a2c4845fd1689527a08e0c36701cddd
Nuage Networks Plugin

Nuage networks’ openstack networking plugin enables integration
of openstack with Nuage Networks’ Virtual Service Platform (VSP)

Change-Id: If20b385b78a350cb9aae2c70b6a44888e74c23bc
Implements: blueprint nuage-networks-plugin
Merge "Add user-supplied arguments in log_handler"
Merge "Change firewall to DOWN when admin state down"
Merge "Updated from global requirements"
Adds the new IBM SDN-VE plugin

It adds a new plugin for SDN-VE, the IBM SDN
controller. The plugin supports the core API
and the port binding and L3 extensions.

Implements: blueprint ibm-sdn-ve-plugin
DocImpact

Change-Id: I92619a95bca2ae0c37e7fdd39da30119b43d1ad6
Merge "Nuage Networks Plugin"
Merge "Adds the new IBM SDN-VE plugin"