Transient failure in spec/requests/api/commits_spec.rb

As seen in https://gitlab.com/gitlab-org/gitlab-ce/builds/10198112:

Failures:

  1) API::Commits Create a commit with multiple files and actions create with project path in URL a new file in project repo
     Failure/Error: expect(response).to have_http_status(201)
       expected the response to have status code 201 but it was 404
     # ./spec/requests/api/commits_spec.rb:156:in `block (5 levels) in <top (required)>'

Finished in 21 minutes 37 seconds (files took 17.99 seconds to load)
658 examples, 1 failure

Failed examples:

rspec ./spec/requests/api/commits_spec.rb:153 # API::Commits Create a commit with multiple files and actions create with project path in URL a new file in project repo