Mode of rack application paths (system umask 0077)

When the OS has an umask of 0077 (the default is 0022) the rack application folders are created with less rights, e.g.:

drwx------. 2 puppet root   4.0K Dec 15 19:48 public
drwx------. 2 puppet root   4.0K Dec 15 19:48 tmp

When a puppet run is started, the following error will appear:
==============================================
Warning: Error 403 on SERVER: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access /production/node/node.fqdn on this server.</p>
</body></html>

By adding the 'mode' value the installation will enforce the accessibility of the rack application paths.