Creating kafka-1.2 branch to build against Java 8

Change-Id: Ib41e7b409dbe4dcf80f77c7f1d66108ead21925b
diff --git a/.gitreview b/.gitreview
index c44e0f2..001f781 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=kafka-onos.git
 defaultremote=origin
+defaultbranch=kafka-onos-1.2