Lochness update to accommodate the new Penn CNB REDCap structure

[kcho]

The main change in the new Penn CNB REDCap is the new field name that contains AMP-SCZ IDs. (src_subject_id, which was session_subid in the previous CNB REDCap) This PR updates the field name.

Note that this PR will change the structure of UPENN JSON files, thus all downstream pipelines depending on the previous json structure need to be updated. An example of the new JSON file is located on ERIS:

/data/predict1/home/kcho/tmp/upenn_new_format/test_one_subject.json

(Deploying this PR will make the lochness instance to overwrite all existing UPENN JSON files.)

[tashrifbillah]

This pull request was simple to review. This block will need update according to this PR:

https://github.com/AMP-SCZ/utility/blob/61321ccbcb5c34d61ab18baab2d2adb91705c671/subject_files_status_for_dpdash1.py#L287-L298

[kcho]

Thanks. I'll merge this PR and deploy it on Pronet server, once DPACC team agrees to move to the new PennCNB format.