Use 3.2.0 OLT debian package for voltha-2.6

Change-Id: I02f74aaedd10a85646ca1657a6096a5cd7d2e0c0
diff --git a/deployment-configs/flex-ocp-cord-openonupy-TT.yaml b/deployment-configs/flex-ocp-cord-openonupy-TT.yaml
index 1d6d191..4d557fa 100644
--- a/deployment-configs/flex-ocp-cord-openonupy-TT.yaml
+++ b/deployment-configs/flex-ocp-cord-openonupy-TT.yaml
@@ -51,7 +51,7 @@
     aggPort: '10'
     serial: 'EC1838000853'
     oltDebVersion: openolt_asfvolt16-3.1.0-812c1126ece038da5c40d0830a09cb67ca36ea07.deb
-    oltDebVersion23: openolt_asfvolt16-2.4.9-dev-d4aeca5a2094f7dc7c519913ab1558348c546dab.deb
+    oltDebVersion23: openolt_asfvolt16-3.2.0-fc10f0d035181d3125ffc6e7a60bf5328fcf5bfa-40G-NNI.deb
 
 onus:
   -