Fix regression in RDS validator

[markpeek]

@yamjoepobuda I think this is more explicit to fix the regression. Can you verify and approve?

[yamjoepobuda]

Updated the line and it ran without issue. However, looking at this it may need to be done for oracle as well?

14484-        if engine in ["mariadb", "mysql", "postgres"]:
14539-            min_storage_size = 400
14574-        elif engine in ["oracle"]:
14609-            min_storage_size = 200
14644-        elif engine.startswith("sqlserver"):
14689-            min_storage_size = 20
14723-            min_iops_to_allocated_storage_ratio = 0.5
14777-        else:
14791-            raise ValueError(
14821:                f"StorageType gp3 is not supported for engine " f"{engine}"
14897-            )

[yamjoepobuda]

Change is good as-is to resolve the reported issue, but oracle may have regressed as well.

[markpeek]

Thank you for the review. Good catch on the oracle change. I pushed a new version and added tests as well for both of them. Can you take a look before a merge?

[yamjoepobuda]

lgtm, thank you for looking into this quickly!