Using onos-2.2 as base for ONOS VOLTHA

Change-Id: Ief5628793ec5e6693504232b7a1464506b67ce59
diff --git a/.gitreview b/.gitreview
index 473a40c..1339d5f 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,4 +3,4 @@
 port=29418
 project=voltha-onos.git
 defaultremote=origin
-defaultbranch=master
+defaultbranch=onos-2.2