[SEBA-980] Introduce maintenance_mode field in XOSCore Object

Change-Id: I7907ec8949d56640912ab2969ac638ab49a0fb53
diff --git a/VERSION b/VERSION
index c4e41f9..c77b5ad 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.3
+4.0.4-dev