abusesa::services: Fix usermod dependency

abusesa/manifests/services.pp

@@ -25,8 +25,9 @@ class abusesa::services(
     path    => '/bin:/usr/bin:/sbin:/usr/sbin',
     command => "usermod -a -G abuserv ${nginx::user}",
     unless  => "id -n -G ${nginx::user} | grep '\\babuserv\\b'",
+    notify  => Service['nginx'],
     require => [
-      Class['nginx'],
+      Package['nginx'],
       Group['abuserv'],
     ],
   }