Fixed typo in string literal.

manifests/auth.pp

@@ -142,7 +142,7 @@ class aes::auth (
     path        => $auth_home,
     command     => "$auth_home/on_update.sh",
     refreshonly => true,
-    require     => File["${auth_home/on_update.sh"],
+    require     => File["${auth_home}/on_update.sh"],
     notify      => Service[$auth_service],
   }