Releasing with Sadis fixes and PPPoE support and OLT scale fixes

Change-Id: I78a2ceb95497a9a7c65d68ff7f3caf5c86ccbecc
diff --git a/VERSION b/VERSION
index f8ee15f..792bf28 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.1.0-dev
+5.1.0-dev1