system-config/modules/ssh/manifests/init.pp

class ssh {
    package { 'openssh-server':
      ensure => present,
    }
    service { 'ssh':
      ensure     => running,
      hasrestart => true,
      subscribe  => File['/etc/ssh/sshd_config'],
    }
    file { '/etc/ssh/sshd_config':
      ensure => present,
      owner  => 'root',
      group  => 'root',
      mode   => '0444',
      source => [ "puppet:///modules/ssh/sshd_config.${::operatingsystem}",
                  'puppet:///modules/ssh/sshd_config' ],
      replace => true,
    }
}