Update gitreview file

Related-prod: PRODX-335
Change-Id: I52035db285300659454611b49677caefb688e198
(cherry picked from commit 47b5d6fdecb78e4a14a8f0b990626e3b8951ed6c)
diff --git a/.gitreview b/.gitreview
index a22fc23..a065473 100644
--- a/.gitreview
+++ b/.gitreview
@@ -1,4 +1,5 @@
 [gerrit]
-host=review.openstack.org
+host=gerrit.mcp.mirantis.com
 port=29418
-project=openstack/octavia-tempest-plugin.git
+project=packaging/sources/octavia-tempest-plugin.git
+defaultbranch=mcp/stein