Update voltha-openolt-adapter chart version and container version for voltha-2.4 branch

Change-Id: Ibdf4b38740875cdde32a29418a54ee4cdc15810e
diff --git a/VERSION b/VERSION
index 8e8299d..35cee72 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.2
+2.4.3