[VOL-3999] Restarting port-forward after restarting VOLTHA-core
component
 Adding explicit error messages for ONOS App upgrade test

Change-Id: I80a2c56dfd26d88d2494d89c67990eb4697fd55c
(cherry picked from commit 2769d2b958bd84e6c829e8b48a2b174ac29676e5)
diff --git a/VERSION b/VERSION
index 37c2961..2c9b4ef 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.7.2
+2.7.3