Moving to 2.2.1-SNAPSHOT

Change-Id: Ia4f8053053b52f6f8c4d7c5e9e997518927db689
diff --git a/.gitreview b/.gitreview
index ac9f466..23a4b40 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=igmpproxy.git
 defaultremote=origin
+defaultbranch=igmpproxy-2.1