Hotfix needed in initial_config-relecov.yaml

[Shettland]

This file has some conflictive keys, like

"lab_metadata_req_json": `{
              "required_conf`` <-- read-lab-metadata expects a dict with {"adding_fields", "file" and "map_field"} keys instead of a list

}


or

    "read_lab_metadata": {
        "alt_heading_equivalences": {
            ....
        },
        "args": {
            "cast_values_from_schema": true,
            "files_folder": "",
            "metadata_file": "",
            "output_dir": "",
             "sample_data_map_field": "collecting_lab_sample_id",      <--     should be "sequencing_sample_id"
             "sample_list_file": "",
            "schema_file"