Change default branch

Related-Prod:PROD-28085
Change-Id: I0bf260c25ef42d82de27286e27f4611cda25fc2b
diff --git a/.gitreview b/.gitreview
index be66bbd..e40c306 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,4 +2,4 @@
 host=gerrit.mcp.mirantis.net
 port=29418
 project=mcp/docker-ci-tempest.git
-defaultbranch=pike
+defaultbranch=mitaka