
##### 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


db_instance_class=dict(aliases=['class', 'instance_type']),
        db_instance_identifier=dict(required=True, aliases=['instance_id', 'id']),
        db_name=dict(),
        db_parameter_group_name=dict(),
        db_security_groups=dict(type='list'),
        db_snapshot_identifier=dict(),
        db_subnet_group_name=dict(aliases=['subnet_group']),
        domain=dict(),
        domain_iam_role_name=dict(),
        enable_cloudwatch_logs_exports=dict(type='list', aliases=['cloudwatch_log_exports']),
        enable_iam_database_authentication=dict(type='bool'),
        enable_performance_insights=dict(type='bool'),
        engine=dict(),
        engine_version=dict(),
        final_db_snapshot_identifier=dict(aliases=['final_snapshot_identifier']),
        force_failover=dict(type='bool'),
        iops=dict(type='int'),
        kms_key_id=dict(),
        license_model=dict(),
        master_user_password=dict(aliases=['password'], no_log=True),
        master_username=dict(aliases=['username']),
        monitoring_interval=dict(type='int'),
        monitoring_role_arn=dict(),
        multi_az=dict(type='bool'),
        new_db_instance_identifier=dict(aliases=['new_instance_id', 'new_id']),
        option_group_name=dict(),
        performance_insights_kms_key_id=dict(),
        performance_insights_retention_period=dict(type='int'),
        port=dict(type='int'),
        preferred_backup_window=dict(aliases=['backup_window']),