Support shutdown_timeout for Sidekiq Cluster
Addresses gitlab-com/gl-infra/scalability#222 (closed) and use the changes made at gitlab!27710 (merged) to support shutdown_timeout
configurations at sidekiq_cluster
and sidekiq['cluster'] = true
.
This is a requirement for gitlab-com/gl-infra/scalability#239 (closed).
Edited by Oswaldo Ferreira