Question: How to use hiera with this module

[cpeetersburg]

I'm trying to use the puppet-ssh-hardening module to provide a secure sshd_config to my servers. I'm using Hiera to manage my config.

When using saz-ssh I can add config in hiera as shown in the example:

ssh::server_options:
    Protocol: '2'
    ListenAddress:
        - '127.0.0.0'
        - '%{::hostname}'
    PasswordAuthentication: 'yes'
    SyslogFacility: 'AUTHPRIV'
    UsePAM: 'yes'
    X11Forwarding: 'yes'

When I try to do this using ssh-hardening it doesn't work, not when using include ssh_hardening, nor when using something like:

$ssh = lookup('ssh', Hash, 'hash')
  class { 'ssh_hardening':
    server_options => {
      * => $ssh[server_options],
  }```

How can I correctly make Hiera override default settings in this module?