Git FSCK has no timeout

FSCK is usually called through sidekiq, but a rake task doesn't have a
mechanism to default to no timeout for this RPC.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53319

changelogs/unreleased/zj-fsck-no-timeout.yml

+---
+title: Remove deadline for Git fsck
+merge_request: 27299
+author:
+type: fixed

lib/gitlab/gitaly_client/repository_service.rb

@@ -190,7 +190,7 @@ module Gitlab
 
       def fsck
         request = Gitaly::FsckRequest.new(repository: @gitaly_repo)
-        response = GitalyClient.call(@storage, :repository_service, :fsck, request)
+        response = GitalyClient.call(@storage, :repository_service, :fsck, request, timeout: GitalyClient.no_timeout)
 
         if response.error.empty?
           return "", 0