Setting up kafkatee on analytics1003 to log mobile webrequest logs

analytics1003 will likely not be the final home for this.  But I'm setting it
up now so that we can start creating logs from mobile varnishkafkas, and start
using them alongside of or instead of the udp2log generated files.  This will
allow some of the reportcard.wmflabs.org dashboards for mobile (and eventually
wikipedia zero) to be generated from Kafka instead of udp2log.

Change-Id: I975b7437a3faeb4d81cf4f255ecb050d7fe5c2e9