Fix for VOL-3977 crash in alarm manager

Change-Id: Ia571baf068a1f8e31b05ebbf89d9d3ee57f561ce
diff --git a/.gitreview b/.gitreview
index 6e7dab7..de0c910 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=voltha-openonu-adapter-go.git
 defaultremote=origin
+defaultbranch=voltha-2.7