Send logs in logstasher schema v1 format and rotate logs

Send logs in this format:  https://logstash.jira.com/browse/LOGSTASH-675

Also, rotate the logstash_production.log file.  10 files, 250MB max.  
I strongly agree with this. I have a strong aversion to things that handle rotation automatically, without configuration exposed. As an optional feature, it's great. As something I have to patch to change, it's in the way.