si_subset_idi_dataset macro has hardcoded schema names

[Vinay Benny]

The SASAUTOS macro called si_subset_idi_dataset macro has used hard-coded values for the schema name. It uses DL-MAA2016-15 as the hard-coded value, which tends to succeed when users within the SIA project execute the code for creating qualifications data. However, this code will fail when anybody external to that project uses it.