Updated service to use new XOS core version: 2.1.22

Change-Id: I266db8e164fe83c717d8362d0ce73ecf8e4b1690
diff --git a/VERSION b/VERSION
index 04b10b4..ebf14b4 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.7
+2.1.8