VOL-4222: Bump to version 1.6.5 with updates to use latest voltha-lib-go

Change-Id: Id4da94e409f7c6eff39d9fab3dff8297369f22df
diff --git a/.gitreview b/.gitreview
index c04b89f..1917b8b 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=ofagent-go.git
 defaultremote=origin
+defaultbranch=voltha-2.8