More robust test for cups-enable on OpenBSD.

cups/manifests/init.pp

@@ -25,7 +25,7 @@ class cups::client {
 		command => "echo y | cups-enable",
 		path    => "/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/local/sbin",
 		user    => root,
-		unless  => "readlink /usr/bin/lpr | egrep '^/usr/local/bin/lpr$'",
+                creates => "/usr/bin/lpr.pre-cups",
 		require => Package["cups"],
 	    }
 	}