Changed to give the influxdb series name as the first word of the servic...

...e field
@aphyr Actually the problem comes for some metrics like "riemann.server.ws.127.0.0.1:5556.conns" (containing colon) and "disk./" (containing backslash) .. because influxdb doesn't accept such names for time-series. Can you kindly give me suggestion how should i go forward with this.