Comment 8 for bug 2019089

I have rebuilt the unpatched focal packages and published to https://launchpad.net/~philroche/+archive/ubuntu/google-guest-agent/ but this does not result in the troublesome `preinst` section like we had in jammy+

```
# Automatically added by dh_installsystemd/13.6ubuntu1
if [ -z "${DPKG_ROOT:-}" ] && [ "$1" = upgrade ] && [ -d /run/systemd/system ] ; then
 deb-systemd-invoke stop 'google-shutdown-scripts.service' 'google-startup-scripts.service' >/dev/null || true
fi
# End automatically added section
```

Could this be as a result of `dh_installdeb/12.10ubuntu1` being used on focal vs `dh_installdeb/13.6ubuntu1` on jammy and the default changing between these versions?