If this is broken in Debian this needs to be updated with a selector or something, maybe

```
loadfile_name => $::osfamily ? {
  'Debian' => undef,
  default  => 'dav_svn_authz_svn.load',
},
```

At least on RHEL-based systems httpd wouldn't start without the loadfile_name due to authz_svn being loaded before dav_svn.