voltha-2.3 release - update ofagent-go version to 1.1.7 and voltha chart version to 2.3.2

Change-Id: If79c6b49d105ffd3c2b175a59b1c07245a3089e1
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index dd168d0..9fde16b 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: 2.3.1
+version: 2.3.2
 
 # app version applies to multiple components with potentially different
 # container image versions