VOL-2631 Cleanup Kafka Interadapter Proxy on shutdown;
Exit gracefully rather than Fatal() on kafka shutdown

Change-Id: Ic4506a8f4e5127d10a0db130a81584c0bf8c8428
diff --git a/VERSION b/VERSION
index bc4abe8..b29ec1d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.3.8
+2.3.9-dev