Use openonu-py adapter chart version 2.4.3 for voltha-2.4 release

Change-Id: Ic2c3907bf038a596a1e630407961919ca069eefc
diff --git a/VERSION b/VERSION
index cdb98d2..4de34c3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.1.3
+5.1.4-dev
diff --git a/releases/voltha-2.4 b/releases/voltha-2.4
index 4cccaa6..1436ec8 100644
--- a/releases/voltha-2.4
+++ b/releases/voltha-2.4
@@ -6,7 +6,7 @@
 export VOLTHA_CHART_VERSION=2.5.4
 export VOLTHA_BBSIM_CHART_VERSION=3.0.29
 export VOLTHA_ADAPTER_OPEN_OLT_CHART_VERSION=2.5.5
-export VOLTHA_ADAPTER_OPEN_ONU_CHART_VERSION=2.4.2
+export VOLTHA_ADAPTER_OPEN_ONU_CHART_VERSION=2.4.3
 export ONOS_CLASSIC_CHART_VERSION=0.1.1
 export RADIUS_CHART_VERSION=1.0.0
 export VOLTCTL_VERSION=1.1.8