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

Change-Id: I383927d4c691859ca33a73d384b633435eed15e7
diff --git a/voltha-infra/values.yaml b/voltha-infra/values.yaml
index d312d91..03bdadf 100644
--- a/voltha-infra/values.yaml
+++ b/voltha-infra/values.yaml
@@ -35,7 +35,7 @@
   image:
     pullPolicy: Always
     repository: voltha/voltha-onos
-    tag: 4.3.1
+    tag: 4.4.0
   apps:
     - org.onosproject.lldpprovider
     - org.onosproject.openflow-base