Switch to Queens OpenStack release

Change-Id: Ieda0b6445480facd98be9851e7559d46849b9ce2
diff --git a/.gitreview b/.gitreview
index a080b19..79258cb 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,3 +2,4 @@
 host=gerrit.mcp.mirantis.net
 port=29418
 project=salt-models/mcp-virtual-aio
+defaultbranch=stable/queens