[VOL-2671] Added replication factor config for kafka topic

Change-Id: Ic25adf1f71f4008ba6930938c9ee8e88dd4f9a18
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index eae37cd..6415843 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -17,7 +17,7 @@
 description: A Helm chart for Voltha based on K8S resources in Voltha project
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 2.2.5
+version: 2.2.6
 
 # app version applies to multiple components with potentially different
 # container image versions
diff --git a/voltha/values.yaml b/voltha/values.yaml
index 24a61ca..8f52628 100644
--- a/voltha/values.yaml
+++ b/voltha/values.yaml
@@ -33,6 +33,8 @@
 # Configure the Kafka sub-chart (if it is used)
 kafka:
   configurationOverrides:
+    # Increase replication factor along with Replicas for HA
+    "default.replication.factor": 1
     "offsets.topic.replication.factor": 1
     "log.retention.hours": 4
     "log.message.timestamp.type": "LogAppendTime"