Make rados/rest bench work for multiple write instances without metadata conflict.
Signed-off-by: Guang Yang <yguang@yahoo-inc.com>
Use string instead of char* when saving arguments for rest-bench
Merge pull request #1675 from guangyy/wip-bench

Make rados/rest bench work for multiple write instances without metadata conflict.

Reviewed-by: Greg Farnum <greg@inktank.com>