Release roc helm charts for aether-1.6

Change-Id: I3ebcbff81a06ec5bbb38f8dc176773d92544d365
diff --git a/VERSION b/VERSION
index bcfbf47..dc1e644 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.6.0-dev
+1.6.0