Update .gitreview

- switch default branch to master

Change-Id: I20ee97e31055a0193b4f8f79b681c5fd7f0efc37
diff --git a/.gitreview b/.gitreview
index e9396ab..1685fec 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,4 +3,4 @@
 port=29418
 project=ONOS.git
 defaultremote=origin
-defaultbranch=dev/ramcloud-new-datamodel
+defaultbranch=master