Using latest released version for different components and update voltha-stack chart.

Change-Id: I383927d4c691859ca33a73d384b633435eed15e7
diff --git a/voltha-adapter-openolt/Chart.yaml b/voltha-adapter-openolt/Chart.yaml
index fb26816..24fcaa8 100644
--- a/voltha-adapter-openolt/Chart.yaml
+++ b/voltha-adapter-openolt/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha-adapter-openolt"
-version: "2.9.0-dev"
+version: "2.9.0"
 description: "A Helm chart for Voltha OpenOLT Adapter"
 keywords:
   - "onf"
@@ -33,4 +33,4 @@
 
 # appVersion refers to multiple components with potentially different
 # container image versions.
-appVersion: "3.1.8"
+appVersion: "3.3.3"