Add "soil" to EntityType enum

[valerie-autumn-skye]

The EMSL JSON data is failing validation against v0.1.0-alpha.12. The EntityType enum needs a "soil" value added.

https://github.com/ber-data/data/blob/31feb04e6719e65fc0abd4637fb7601a59c0a100/ingest/emsl/emsl_00002.json#L9

EntityType is currently defined as:

        "EntityType": {
            "description": "The type of entity captured in this record.",
            "enum": [
                "biodata",
                "jgi_biosample",
                "sample",
                "sequence",
                "taxon",
                "unspecified",
                "project",
                "site",
                "dataset"
            ],
            "title": "EntityType",
            "type": "string"

FYI - As a test, Shreyas changed "soil" to "sample" on a sample EMSL record, and it ingests without any additional validation errors.

[ialarmedalien]

Would soil be classified as a "sample"? There are a lot of environmental samples (soil cores, water, etc.) in ESS-DIVE and NMDC and I think they are all given the generic category of "sample".

@mslarae13 @vchendrix can you chime in here?

[shreddd]

@JamesCarrPNNL See above

[JamesCarrPNNL]

I think changing it to "sample" is a better solution for now- this is something we can change later if we need to but I'm fine conforming with the consensus. I will update the file!