copy_to_rbd.py: close down rbd connections gracefully
copy_to_rbd.py: close down rbd connections gracefully

drwahl/os-maintenance-tools,fzylogic/os-maintenance-tools,fzylogic/os-maintenance-tools,fzylogic/os-maintenance-tools,drwahl/os-maintenance-tools,dreamhost/os-maintenance-tools,drwahl/os-maintenance-tools,dreamhost/os-maintenance-tools,dreamhost/os-maintenance-tools