old_contents: {
    graphiteHost: "127.0.0.1",
    graphitePort: 2003,
    port: 8125,
    flushInterval: 10000,
    debug: false,
    dumpMessages: false,
    backends: ["./backends/graphite"],
    deleteIdleStats: true,
    percentThreshold: [90, 95, 99]
  }
  
new_contents: {
    graphiteHost: "127.0.0.1",
    graphitePort: 2003,
    port: 8125,
    flushInterval: 10000,
    debug: false,
    dumpMessages: false,
    backends: ["./backends/graphite"],
    deleteIdleStats: true,
    percentThreshold: [90, 95, 99],
    metricToggles: {
      "std": true,
      "upper": true,
      "lower": true,
      "count": true,          // counts per flushInterval
      "count_ps": true,       // counts per second
      "sum": false,           // sums of timer values for each percentThreshold
      "sum_squares": false,   // sums of squares of timer values for each percentThreshold
      "mean": true,
      "median": true,
    }
  }
  
subject: update config to toggle off sum, sum_squares