command to save frontend partitioning schema into rocks DB

This command is a series of hacks in oder to be able to re-save frontend
partitions inside rocks DB (it needs some refactoring).

Signed-off-by: Luca Clementi <luca.clementi@gmail.com>
no need to print debugging statements

Signed-off-by: Luca Clementi <luca.clementi@gmail.com>