Updating 2.8 and 2.9

Change-Id: I54fd053290a699ebf081b9ea21f71d57a510cebf
diff --git a/.gitreview b/.gitreview
index 94a12ba..bfadfc6 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=voltha-docs.git
 defaultremote=origin
+defaultbranch=voltha-2.9