fix issues in tests - voltha-2.5

Change-Id: Ieecd3f46662bb7df6bcaebd31bf87f1bf05fcbec
diff --git a/.gitreview b/.gitreview
index 4e39788..22acb31 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=voltha-system-tests.git
 defaultremote=origin
+defaultbranch=voltha-2.5