Updating APPs to released version and tagging for VOLTHA 2.4

Change-Id: I800ad6121b2f15314eb1ab35736c6eeb4c31bbf9
diff --git a/VERSION b/VERSION
index 640cc0b..ee74734 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.1.0-dev18
+4.1.0