Update charts for voltha-2.15 release

Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: I3b22a71f03965f800ba37e998535caac4da838b1
diff --git a/voltha-go-controller/Chart.yaml b/voltha-go-controller/Chart.yaml
index 3369a7e..fcbe124 100644
--- a/voltha-go-controller/Chart.yaml
+++ b/voltha-go-controller/Chart.yaml
@@ -20,13 +20,13 @@
 # -----------------------------------------------------------------------
 
 # appVersion refers to release version of voltha-go-controller
-appVersion: "0.1.14"
+appVersion: "0.1.21"
 
 description: A Helm chart for Kubernetes
 name: voltha-go-controller
 
 ## Chart version for package voltha-go-controller
 ##   Increment when Chart.yaml changes
-version: "2.15.2"
+version: "2.15.3"
 
 # [EOF]