Refactor nodetool for storage
Refactor nodetool for storage

project-fifo/leofs,yosukehara/leofs,project-fifo/leofs,windkit/leofs,leo-project/leofs,vstax/leofs,leo-project/leofs,bsmr-erlang/leofs,yosukehara/leofs,DavidAlphaFox/leofs,windkit/leofs,vstax/leofs