Comment 5 for bug 1328645

https://review.openstack.org/#/c/99250/ adds /mnt/state/var/log to extracted files.

Also need to update https://github.com/openstack-infra/config/blob/master/modules/openstack_project/files/logstash/jenkins-log-client.yaml to include new files as well as to update (we have old names for over/undercloud nodes)

We may need to change over/under cloud node naming, which currently includes random strings as this does not appear to be terribly friendly to the indexing code.