cleanup the stats json a bit

```
{
   "leader":"machine1",
   "peers":{
      "machine2":{
         "latency":{
            "current":1.772338,
            "average":1.0749199280898891,
            "standardDeviation":0.8457034525757665,
            "minimum":0.383899,
            "maximum":11.992991
         },
         "counts":{
            "fail":4,
            "success":445
         }
      },
      "machine3":{
         "latency":{
            "current":1.509738,
            "average":1.0677501002227179,
            "standardDeviation":0.8358789034579859,
            "minimum":0.451365,
            "maximum":12.219284
         },
         "counts":{
            "fail":0,
            "success":449
         }
      }
   }
}
```