[stable/1.0] Add zuul CI

Change-Id: I6dba518b88d7e287cdbaeced97c979427fdca981
diff --git a/.gitreview b/.gitreview
index 745b451..a421f9e 100755
--- a/.gitreview
+++ b/.gitreview
@@ -1,4 +1,5 @@
 [gerrit]
-host=review.opendev.org
+host=review.vexxhost.dev
 port=29418
-project=openstack/staffeln.git
+project=staffeln.git
+defaultbranch=stable/1.0