[VOL-4357] Using 5.0.3 voltha-onos based on updated 2.5.4 ONOS to fix HA test.

Change-Id: I607af76b520fdee376991c970940b017bc0cf990
diff --git a/bbsim/Chart.yaml b/bbsim/Chart.yaml
index b534e3c..6389ad2 100644
--- a/bbsim/Chart.yaml
+++ b/bbsim/Chart.yaml
@@ -16,5 +16,5 @@
 description: Broadband Simulator
 icon: https://guide.opencord.org/logos/cord.svg
 apiVersion: v1
-version: 4.4.2
-appVersion: 1.8.0
+version: 4.5.0
+appVersion: 1.8.1