Use 3.2.0 OLT debian package for voltha-2.6

Change-Id: I02f74aaedd10a85646ca1657a6096a5cd7d2e0c0
diff --git a/deployment-configs/onf-demo-pod-gpon-DT.yaml b/deployment-configs/onf-demo-pod-gpon-DT.yaml
index 70e0b25..95e584b 100644
--- a/deployment-configs/onf-demo-pod-gpon-DT.yaml
+++ b/deployment-configs/onf-demo-pod-gpon-DT.yaml
@@ -51,7 +51,7 @@
       aggPort: 9
       serial: EC1912001818
       oltDebVersion: openolt_asgvolt64-3.2.0-fc10f0d035181d3125ffc6e7a60bf5328fcf5bfa-40G-NNI.deb
-      oltDebVersion23: openolt_asgvolt64-2.4.9-dev-d4aeca5a2094f7dc7c519913ab1558348c546dab.deb
+      oltDebVersion23: openolt_asgvolt64-3.2.0-fc10f0d035181d3125ffc6e7a60bf5328fcf5bfa-100G-NNI.deb
 
   hosts:
     src: