also move OS Login next to it, for better understandability

With local-fs.target part of sysinit.target
(#61321), we don't need to add it
explicitly to certain units anymore, and can change dependencies like
they are in other distros (I picked from Google's official CentOS 7
image here).

Like them, use StandardOutput=journal+console to pipe google-*.service
output to the serial console as well.

…temctl

…PATH

It executes bin/google_set_multiqueue which will execute basename

We make them available at ${gce}/sysctl.d and add them to
environments.etc, like we do with the systemd ones.

google-compute-config.nix: fix comments, update google-*.service units, fix paths in gce