code: func (j *AuroraJob) AddLimitConstraint(name string, limit int32) Job {
  	j.jobConfig.TaskConfig.Constraints = append(j.jobConfig.TaskConfig.Constraints,
  		&aurora.Constraint{
  			Name: name,
  			Constraint: &aurora.TaskConstraint{
  				Value: nil,
  				Limit: &aurora.LimitConstraint{Limit: limit},
  			},
  		})
  
  	return j
  }
docs: // From Aurora Docs:
  // A constraint that specifies the maximum number of active tasks on a host with
  // a matching attribute that may be scheduled simultaneously.