
##### 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


- new_instance_id
          - new_id
        type: str
    option_group_name:
        description:
          - The option group to associate with the DB instance.
        type: str
    performance_insights_kms_key_id:
        description:
          - The AWS KMS key identifier (ARN, name, or alias) for encryption of Performance Insights data.
        type: str
    performance_insights_retention_period:
        description:
          - The amount of time, in days, to retain Performance Insights data. Valid values are 7 or 731.
        type: int
    port:
        description:
          - The port number on which the instances accept connections.
        type: int
    preferred_backup_window:
        description:
          - The daily time range (in UTC) of at least 30 minutes, during which automated backups are created if automated backups are
            enabled using I(backup_retention_period). The option must be in the format of "hh24:mi-hh24:mi" and not conflict with
            I(preferred_maintenance_window).
        aliases:
          - backup_window
        type: str
    preferred_maintenance_window:
        description:
          - The weekly time range (in UTC) of at least 30 minutes, during which system maintenance can occur. The option must