stats provided by ES exceede data type sizes.

[woodsaj]

2016/06/21 11:27:13 time="2016-06-21T11:27:13Z" level=error msg="decoding response error" _block=get-node-data-decoding _module=es-node-client error="json: cannot unmarshal number 2302360033 into Go value of type int32"

this is from the transport stats.

https://github.com/intelsdi-x/snap-plugin-collector-elasticsearch/blob/master/elasticsearch/node.go#L380-L385