Update EMSL datasets with fixes

[shreddd]

Found 2 issues with EMSL datasets in ingest

1. In ingest/emsl/emsl_00002.json - entity_type is set to "soil" which is not a recognizes type. Possible set to "sample"? See - Add "soil" to EntityType enum bertron-schema#80
2. In ingest/emsl/emsl_00001.json - we still use the old schema eg.

"coordinates": {"depth": null, "altitude": null, "latitude": 40.0867, "elevation": null, "longitude": -83.2392},

Move depth,, altitude to properties if needed (or don't include them if not needed)

[mslarae13]

Also to add is unique IDs for MONet samples. Currently, IDs are at the core level, not at the individual sample level. Need to add sample level identifiers.