Move ListCommitsByOid to OPT_OUT

Acceptence testing was successfull in
[#844](https://gitlab.com/gitlab-org/gitaly/issues/844)

Part of gitlab-org/gitaly#670

changelogs/unreleased/zj-opt-out-list-commits-by-oid.yml

+---
+title: ListCommitsByOid is executed by Gitaly by default
+merge_request:
+author:
+type: performance

lib/gitlab/git/commit.rb

@@ -231,7 +231,8 @@ module Gitlab
         # relation to each other. The last 10 commits for a branch for example,
         # should go through .where
         def batch_by_oid(repo, oids)
-          repo.gitaly_migrate(:list_commits_by_oid) do |is_enabled|
+          repo.gitaly_migrate(:list_commits_by_oid,
+                              status: Gitlab::GitalyClient::MigrationStatus::OPT_OUT) do |is_enabled|
             if is_enabled
               repo.gitaly_commit_client.list_commits_by_oid(oids)
             else