This is to be consistent with ``mirror-dir`` executable installation, and
to avoid one step when updating VPS: you need only up-to-date ``0k-charms``
and no need to re-install host backup through this script to get update
of ``mysql-backup`` script.
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>
This comes from the mysql script. And it'll be required as we need this
script for hosts installs.
Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>