Revert "[VOL-3509] update BAL version for GPON job"

This reverts commit bc9ff41d22cf975b453755bce8e6bbc7f7f0cfe3.

Reason for revert: New BAL has issues, reverting to older version

Change-Id: I041536961dc7c615d8d98a5903e3b8d3e48fc88f
diff --git a/deployment-configs/onf-demo-pod-gpon-DT.yaml b/deployment-configs/onf-demo-pod-gpon-DT.yaml
index 50980fb..e278a92 100644
--- a/deployment-configs/onf-demo-pod-gpon-DT.yaml
+++ b/deployment-configs/onf-demo-pod-gpon-DT.yaml
@@ -50,7 +50,7 @@
       fortygig: True
       aggPort: 9
       serial: EC1912001818
-      oltDebVersion: openolt_asgvolt64-2.5.0-ffd01bff081d566ed187c91388ae3ff7961a1485.deb
+      oltDebVersion: openolt_asgvolt64-2.4.9-dev-d4aeca5a2094f7dc7c519913ab1558348c546dab.deb
       oltDebVersion23: openolt_asgvolt64-2.4.9-dev-d4aeca5a2094f7dc7c519913ab1558348c546dab.deb
 
   hosts: