Issue 2188 - Use class parameter lookup feature with Hiera

modules/nagios/manifests/server.pp

 class nagios::server(
     $domain,
     $certificate,
     $private_key,
     $is_default=false,
     $htpasswd_source,
     $admins,
     $zone,
+    $contacts = hiera('nagios::server::contacts', {}),
+    $contactgroups = hiera('nagios::server::contactgroups', {}),
+    $commands = hiera('nagios::server::commands', {}),
+    $services = hiera('nagios::server::services', {}),
+    $hosts = hiera('nagios::server::hosts', {}),
+    $hostgroups = hiera('nagios::server::hostgroups', {}),
   ) {
 
   File {
     owner  => 'root',
     group  => 'root',
     mode   => 0644
   }
 
   include nginx, 'spawn-fcgi'
 
@@ skipping 121 matching lines @@
   file {['/etc/nagios3/conf.d/contacts.cfg',
          '/etc/nagios3/conf.d/contactgroups.cfg',
          '/etc/nagios3/conf.d/commands.cfg',
          '/etc/nagios3/conf.d/hosts.cfg',
          '/etc/nagios3/conf.d/hostgroups.cfg',
          '/etc/nagios3/conf.d/services.cfg']:
     require => Package['nagios3'],
     notify => Service['nagios3']
   }
 
-  $nagios_contacts = hiera('nagios_contacts', {})
-  create_resources(nagios_contact, $nagios_contacts)
-
-  $nagios_contactgroups = hiera('nagios_contactgroups', {})
-  create_resources(nagios_contactgroup, $nagios_contactgroups)
-
-  $nagios_commands = hiera('nagios_commands', {})
-  create_resources(nagios_command, $nagios_commands)
-
-  $nagios_services = hiera('nagios_services', {})
-  create_resources(nagios_service, $nagios_services)
-
-  $nagios_hosts = hiera('nagios_hosts', {})
-  create_resources(nagios_host, $nagios_hosts)
-
-  $nagios_hostgroups = hiera('nagios_hostgroups', {})
-  create_resources(nagios_hostgroup, $nagios_hostgroups)
+  create_resources(nagios_contact, $contacts)
+  create_resources(nagios_contactgroup, $contactgroups)
+  create_resources(nagios_command, $commands)
+  create_resources(nagios_service, $services)
+  create_resources(nagios_host, $hosts)
+  create_resources(nagios_hostgroup, $hostgroups)
 
   $nagios_generic = hiera('servers')
   create_resources(nagios::server::generic_host, $nagios_generic)
 
   define generic_host(
     $ip,
     $ssh_public_key = undef,
     $role = undef,
     $dns = undef,
     $groups = [],
   ) {
 
     if $dns == undef {
       $fqdn_name = join([$name, $nagios::server::zone], '.')
     } else {
       $fqdn_name = $dns
     }
 
     nagios_host {$fqdn_name:
       use => 'generic-host',
       hostgroups => $groups,
     }
   }
 }