SEBA-405 Update VOLT Service to use synchronizer library

Change-Id: I8292e0e7d1b7c76b1e53d9bd944abf95d9b38333
diff --git a/VERSION b/VERSION
index 0ddcadb..a62db96 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.21
+2.1.22