Add nova and glance screen logs to logstash.

New larger elasticsearch server is in place. Open the log floodgates and
let the nova and glance logs flow.

Change-Id: I90ecffc192f7786b9e98d94ee863ec221a5c183b
Reviewed-on: https://review.openstack.org/30371
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins