[VOL-4345] Moving to ONOS 2.5.3 as base image to include some fixes.
Used for voltha 2.8 as well.

Change-Id: I4a4f7808b7c7da5e002a3f5d99095e1734f2e2ee
diff --git a/VERSION b/VERSION
index 6b244dc..a1ef0ca 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.0.1
+5.0.2