commands: do not touch /etc/localtime in chrooted calls
commands: do not touch /etc/localtime in chrooted calls

Added option `--timezone=off` for `systemd-nspawn` to leave the
file untouched during the chrooted calls.

Fixes: #180

Signed-off-by: Denis Pynkin <3fbf95ee68899518ee8799d35f88c8f7982aa936@collabora.com>

go-debos/debos