'launched_by’ property returns summary { id,type,name,url } of object that launched the current UnifiedJob
'ancestor_job’ property returns summary { id,type,name,url } of the first workflow in case the current UnifiedJob was started by a workflow or a workflow chain
Added ‘launched_by’ field and ‘get_launched_by’ function in ‘UnifiedJobSerializer’ , to expose the ‘launched_by’ field in GET ‘api/v2/unified_job/id’ response
Added ‘ancestor_job’ field in the summary field of UnifiedJob in the GET ‘api/v2/unified_job/id’ response