Enable attr_filter module before service's boost

manifests/init.pp

@@ -191,8 +191,9 @@ class freeradius (
     notify  => Service[$freeradius::fr_service],
   }
   file { "${freeradius::fr_modulepath}/attr_filter":
-    ensure => link,
-    target => '../mods-available/attr_filter',
+    ensure  => link,
+    target  => '../mods-available/attr_filter',
+    notify  => Service[$freeradius::fr_service],
   }
 
   # Install default attribute filters