[riakcs] support Riak CS 2.1+ stats format
[riakcs] support Riak CS 2.1+ stats format
takus/dd-agent,cberry777/dd-agent,takus/dd-agent,manolama/dd-agent,manolama/dd-agent,takus/dd-agent,cberry777/dd-agent,cberry777/dd-agent,takus/dd-agent,cberry777/dd-agent,manolama/dd-agent,manolama/dd-agent,takus/dd-agent,cberry777/dd-agent,manolama/dd-agent