Rsync hiera files after librarian-puppet

This is because of a race condition described in https://github.com/cargomedia/puppet-cargomedia/pull/528
This is an absolutely annoying thing. Actually, passing arbitrary paths here is asking for troubles! We'd need to `exec{'mkdir -p':}` and later create a `file` resource for this path. I haven't done yet, may be we should write a custom fuction which returns an array of single paths up to the final one and then require them in order so that puppet autorequires them? Not sure, but this is really smelly