SEBA-206 Report OLT link connectivity in OLTDevice model

Change-Id: Icb3a75d719adac6d8eea139fe9d00d34a11baecb
diff --git a/VERSION b/VERSION
index 6156c34..fba128e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.23
+2.1.24-dev