Release voltha-lib-go v2.2.16

Change-Id: I0707186129dda6d6b546f3d1473a69e73f9cfa80
diff --git a/VERSION b/VERSION
index 2653fe5..ed1fc35 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.16-dev
+2.2.16