VOL-2189 Update helm charts to 2.2.1 images; Update version to 2.2.0-dev

Change-Id: I1a68b66a71b2961a858b6b61fd284b11ef8ba9f1
diff --git a/VERSION b/VERSION
index 340db23..97ade15 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.0.0-dev0
+2.2.0-dev