Delete child services on service broker destruction

[Finishes #55912602]
Add ActiveRecord support for Delayed Job
Add API endpoint for job status

[#53927417]
Add delayed jobs rake tasks
Listen to CC queue in rake jobs task
Close ActiveRecord connection at the end of Thin thread
Setup environment before rake task
Clarify job status
Add guid to delayed jobs
allow users to access users in organization and spaces that they have access to