Update gitreview file

Related-prod: PROD-22634

Change-Id: I4b4ce8195c2454d29675a6d2640c794186d5cfdb
(cherry picked from commit 1945b981a9e017eaf6a8084fdd4b54913d0a9cf2)
(cherry picked from commit 606c717c729b70655eaf9ee0baa063b4fc0c9cdb)
diff --git a/.gitreview b/.gitreview
index eb7801e..b7fa558 100644
--- a/.gitreview
+++ b/.gitreview
@@ -1,4 +1,5 @@
 [gerrit]
-host=review.openstack.org
+host=gerrit.mcp.mirantis.com
 port=29418
-project=openstack/barbican-tempest-plugin.git
+project=packaging/sources/barbican-tempest-plugin.git
+defaultbranch=mcp/xenial/rocky