I think I gonna simply skip the udev rules overriding, it will be up to the user to do the cleaning if he wants to do cloning etc... as done in cloud-init package, waiting for easier udev management from package side.
Thanks to all for your advises. quoting previous... -- > > gpg key id: 4096R/326D8438 (keyring.debian.org) > > Key fingerprint = 5FB4 6F83 D3B9 5204 6335 D26D 78DC 68DB 326D 8438 > > -- gpg key id: 4096R/326D8438 (keyring.debian.org) Key fingerprint = 5FB4 6F83 D3B9 5204 6335 D26D 78DC 68DB 326D 8438