Fully test new Ingest and Entity API multiple component endpoints

[maxsibilla]

Example query:

{
  "creation_action": "Multi-Assay Split",
  "group_uuid": "57192604-18e0-11ed-b79b-972795fc9504",
  "direct_ancestor_uuids":["ef3c6d68088d9ecaa92f0105014c4fdd"],
  "datasets":[
    {
      "dataset_link_abs_dir": "/codcc-dev-test/data-dev/consortium/CODCC Testing Group/ef3c6d68088d9ecaa92f0105014c4fdd/atacseq",
      "contains_human_genetic_sequences": true,
      "data_types":["snATAC-seq"]
    },
    {
      "dataset_link_abs_dir": "/codcc-dev-test/data-dev/consortium/CODCC Testing Group/ef3c6d68088d9ecaa92f0105014c4fdd/rnaseq",
      "contains_human_genetic_sequences": true,
      "data_types":["snRNAseq"]
    }
  ]
}

[maxsibilla]

Need to verify

• [ ] Using different creation_action properties fails
• [ ] Supplying multiple direct_ancestor_uuidsfails
• [ ] Suppling 1 or more than 2 datasets fails

[maxsibilla]

For the Ingest API need to verify:

• [ ] dataset_link_abs_dir exists for every dataset
• [ ] dataset_link_abs_dir actually resolves to an existing directory
• [ ] The newly created secondary datasets' directory is a symlink to what is specified by dataset_link_abs_dir