This proposes changing the tags added to the openstack logs
gathered by the fluentd handler from `openstack.<service>` to
`Namespace.Release` to account for multiple instances of openstack
services being deployed into different namespaces. This allows for
fine tuning the search queries in elasticsearch/kibana to target
specific service deployments in specific namespaces
Change-Id: Ia12dceb4089e107e15d8e30c92c91f350dc31318
2f878e6cf7