Update notes for submitted changes

* Bugzilla bug 1178: For internally allocated route-targets, use range 8000000 plus to avoid conflict with configured targets We will now reject any configured targets that are in the range of automatically allocated targets We will also reject changes to global asn if it conflict with any configured targets Change-Id: I47ea2282bb6a3bd6e36b0792745a6eeb18f558b6