Fix auto loading of constants for Ci Statuses

app/models/ci/build.rb

app/models/ci/pipeline.rb

app/models/ci/stage.rb

app/models/commit_status.rb

app/views/ci/status/_icon_with_label.html.haml

lib/gitlab/ci/status/build/cancelable.rb

lib/gitlab/ci/status/build/play.rb

lib/gitlab/ci/status/build/retryable.rb

lib/gitlab/ci/status/build/stop.rb