[VOL-5565]:stop heartbeat routine before device cleanup

Change-Id: I3b2b8aa98374c46ef57b2320f6549f133a91085d
Signed-off-by: balaji.nagarajan <balaji.nagarajan@radisys.com>
diff --git a/VERSION b/VERSION
index f07249b..7e07446 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.6.15
+4.6.16