timeout bug running `cielito.hestia.cp`

Deploying hestia with cielito.hestia.cp role on a pve debian 12 c-i image installed, the remote installation of hestia fails with a timeout. Running the command manually, the problem is the image has postfix package installed, and the installation script runs into this package remove interactive confirmation.

We should assert the presence of these package and/or force the installation.