Fixed Cleanup section in Jenkins-voltha-build

Change-Id: Iae1e859745c8aa8f9314c091ac0428b9f579e7f0
diff --git a/VERSION b/VERSION
index 097a15a..ec1cf33 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.6.2
+2.6.3