[WIP] Update kibana module for kibana 4

• Transition kibana from trebuchet deployment to deb
• Proxy requests from apache to the node.js application.
• Drop previous apache config focused around serving static files and proxying requests to elasticsearch.
• default_route argument to kibana module changed to default_app_id to match new config file.
• Status check now hits an html page, but it's proxied to the node.js app so probably reasonable.
• Makes no attempt to uninstall the kibana package, will nuke by hand once everything looks sane in prod.

TODO:

• Testing in beta cluster is a pain, because we want one server on kibana 3 and another on kibana 4. In prod though we will want only the upgrade so doing the patch like this.
• Add kibana deb from elastic.co to apt.wikimedia.org
• Test apache proxying for sanity. Caching headers look to be set appropriately by the nodejs app.

Bug: T129138
Change-Id: I2a11a05be801c461caeb11228ea5f5b496d743a9