Update Traffic Stats to collect and store /crs/stats data from Traffic Routers

Traffic Router has an API endpoint (:3333/crs/stats) that has lots of really good information. Traffic Stats should poll this API endpoint and store the data in InfluxDB.

TODO:

• Update create_ts_database to create new traffic_router table
• Update create_ts_database to create retention policies on traffic_router table
• Update create_ts_database to add continuous queries for traffic_router data (downsample to 1 min is a good start)
• Add a poller to poll Traffic Router /crs/stats endpoint, collect stats, and write to BPS chan.
• whatever else I forgot