Updating .gitreview for dev/murrelet

Change-Id: I255bfbcff6477cda51199ad9686baaca632519df
diff --git a/.gitreview b/.gitreview
index 328aec6..28ab9cf 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,4 +3,4 @@
 port=29418
 project=onos.git
 defaultremote=origin
-defaultbranch=master
+defaultbranch=dev/murrelet