Updated service to use new XOS core version: 2.1.25

Change-Id: Ic12bea20b481a4417d63723c1c8bb1b57376cddd
diff --git a/VERSION b/VERSION
index 08ec77d..399088b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.6-dev
+2.1.6