Tagging for Aether 2.1 release

Change-Id: I074e39c3bea1c9c5a1faf34d0d9906de5689c08b
diff --git a/VERSION b/VERSION
index e3833ce..7ec1d6d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.0-dev1
+2.1.0