This way we can push ssh keys that can pull/push to repositories. This
is very handy if we wish to edit/maintain the appinfo repository right
on the server where it is hosted....
The idea here is that we can have a backup server that should run on a
slow huge disk, and that the rest should run on your very fast nvme's.
To differentiate, you can specify where the homedir should be
Render the template system wide, then apply. This way, the
appdefinition.yml can contain everything that is required, and we don't
have to specify this anymore in the main config
