New Variables for OCG Service

The service is now able to store output files in a discrete directory
for file management purposes. This is the output_dir. These are saved
for 5 days currently.

It can also save files which caused errors in a discrete directory. This
is the postmortem_dir. Right now puppet will save these for 3 days.

The service will also now log to logstash via the GELF structured logging
format.

Change-Id: Id46ce90de1fe8b288c0a205bd3de8362b473e708