bird6: Filters - Add new Ilico IPv6 PA (announced by grenode)

etc/local/bird/bird6/filters.conf

@@ -16,6 +16,7 @@ prefix set as_prefixes;
         51083:  as_prefixes = [
                         2001:912::/36+,         # Grenode
                         2001:912:1000::/36+,    # Rezine
+                        2001:912:2000::/36+,    # Ilico
                         2a00:5881:4000::/40+,   # Illyse Lyon
                         2a00:5881:c000::/40+    # Illyse St-Etienne
         ];