VOL-2189 release version 2.2.1

Change-Id: I7f9e7b14bccc147e43f2fef0dfb0e27918175f5d
diff --git a/VERSION b/VERSION
index 84e6d84..c043eea 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.1-dev
+2.2.1