VOL-2030 Release master branch voltha-simonu-adapter version 2.2.0

Change-Id: I23b67e8024dbce4de55cdd33cf0b85d9bb249f5c
diff --git a/VERSION b/VERSION
index 97ade15..ccbccc3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.2.0-dev
+2.2.0