Add full provenance info to metadata.tsv files

[maxsibilla]

Jonathan has requested that the full provenance metadata information be included in the metadata.tsv files that are currently being generated (which only include the actual data metadata that we obtain during dataset ingest).

Both for the endpoint that will generate a metadata.tsv file for a dataset and a publication time change the contents of the metadata.tsv file to include the full json response of the entity-api /entities/<dataset id> endpoint and add to that lists of the full response all associated donors, organs and samples. See example cypher below to obtain the uuids of these associated entities, then make calls to the entity-api /entities/<entity id> endpoint to get the json for inclusion in the list of each type.

Related to hubmapconsortium/ingest-api#411

[maxsibilla]

@tjmadonna It looks like whenever a dataset gets published a metadata.json file gets created and that is what needs to be updated. See: https://github.com/hubmapconsortium/ingest-api/blob/b591031cdf943749f3bf858dd12f594eb5f6421a/src/app.py#L951-L960

Relevant PR where this update is made:
https://github.com/hubmapconsortium/ingest-api/pull/481/files

A companion issue is sennetconsortium/entity-api#285