GitLab

* If -y is not specified and a cache file is found, ask the user before
using it.
* "Fix" the -c option's behaviour. With this commit, if -c is applied,
the system will use the provided cache file if present and will do a
debootstrap if the file does not exist. The result of debootstrap will
be saved in the default cache file provided by the HELPER_CACHE_FILE
variable. This way, we do not need to provide an extra "disable cache
file option". One can run the program with -c "" to get this behaviour.

Update the windows registry in Unattend.xml to force an automatic
Windows Update

This bug was introduced in commit 88262dba that added pipefail bash
option to all configuration tasks

This is needed because common.sh contains functions that use pipes,
and the script should fail if any command fails.

The system's architecture is needed by debootstrap.

 * Change Maintainer to Nikos Skalkotos
 * Change file mode for /etc/default/snf-image to 0600

When get_distro and get_base_distro do not detect the linux distribution
a warning is triggered.

AssignHostname fails if the distribution is not known.