Stop setting owner/group on files in /vagrant/settings.d

When using the host NFS server to export file systems to the client VM,
there can be issues with uid/gid mapping that prevent setting file
ownership. Also removes unnecessary `require => File` constraints.
Puppet will automatically manage creating directories before files that
need them.

Bug: 67231
Change-Id: I3228ab4038cbf38befa1e6cc1a317a1ec03463ea