Bump xos libraries to version 4.0.0

Change-Id: I377de821b6aabf23c5ec5530450e26cd5e6451f5
diff --git a/VERSION b/VERSION
index 7c7e096..2468aa9 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.1-dev
+3.0.0-dev