Use 3.4.8 version of the openolt debian package for master jobs on all pods

Change-Id: I9ecd228e973112ced0e4b9f9871bc423bf15f4bc
diff --git a/deployment-configs/onf-demo-pod-DT.yaml b/deployment-configs/onf-demo-pod-DT.yaml
index 70a0e92..94dc696 100644
--- a/deployment-configs/onf-demo-pod-DT.yaml
+++ b/deployment-configs/onf-demo-pod-DT.yaml
@@ -51,7 +51,7 @@
     fortygig: 'true'
     aggPort: '1'
     serial: 'EC1904000654'
-    oltDebVersion: openolt_asfvolt16-3.4.1-dev-c5dcc7f2b27df1c42868b3a79a5416808511bb1d-40G-NNI.deb
+    oltDebVersion: openolt_asfvolt16-3.4.8-eec0fc9e9a01dc0d35b0b8441e0a22a4c0cc51b4-40G-NNI.deb
     oltDebVersion23: openolt_asfvolt16-3.3.3-1a5d68b50d8bcc5ba6cb1630d3294c30c37cd2f5-40G-NNI.deb
 
 onus: