Bumping VERSION to 1.3.0-dev

Change-Id: Ie93f6101598665f0a7e0fb53c752f1de4bcfc4ef
diff --git a/VERSION b/VERSION
index 6085e94..b6bb93f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.2.1
+1.3.0-dev