VOL-2583 adding "IPv4MulticastAddressTable" frame to omci_entities.py .
 This entity using by Multicast GEM Interworking TP.

Change-Id: I4d64cc2b2ded55e94d24b4f5fca0e69b560b2679
diff --git a/VERSION b/VERSION
index d245ee8..d3bec23 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.3.19
+2.3.20_dev