
##### SUMMARY

RDS services can auto-allocate storage. So you can start with the lowest ebs volume and don't care anymore about growing data in der database.  
The boto3 parameter to activate this feature is `MaxAllocatedStorage` (integer) 

>  The upper limit to which Amazon RDS can automatically scale the storage of the DB instance.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
rds_instance


changed = False
    
    if not instance:
        instance = get_instance(client, module, instance_id)
    
    changed |= ensure_tags(
        client, module, instance['DBInstanceArn'], instance['Tags'], module.params['tags'], module.params['purge_tags']
    )
    changed |= promote_replication_instance(client, module, instance, module.params['read_replica'])
    changed |= update_instance_state(client, module, instance, module.params['state'])
    return changed
def promote_replication_instance(client, module, instance, read_replica):