Can't add external tools now that https://github.com/IQSS/dataverse/pull/6059 has been merged

[pdurbin]

Now that IQSS/dataverse#6059 has been merged, the develop branch requires that external tools have a "scope" of dataset or file, like this:

{
  "displayName": "Fabulous File Tool",
  "description": "Fabulous Fun for Files!",
  "scope": "file",
  "type": "explore",
  "toolUrl": "https://fabulousfiletool.com",
  "contentType": "text/tab-separated-values",
  "toolParameters": {
    "queryParameters": [
      {
        "fileid": "{fileId}"
      },
      {
        "key": "{apiToken}"
      }
    ]
  }
}

Otherwise, you'll get errors like this:

TASK [dataverse : enable wholetale externaltool] *******************************
fatal: [localhost]: FAILED! => {"changed": false, "connection": "close", "content": "{"status":"ERROR","message":"scope is required."}", "content_length": "49", "content_type": "application/json", "date": "Tue, 17 Sep 2019 21:01:35 GMT", "json": {"message": "scope is required.", "status": "ERROR"}, "msg": "Status code was 400 and not [200]: HTTP Error 400: Bad Request", "redirected": false, "server": "GlassFish Server Open Source Edition 4.1", "status": 400, "url": "http://localhost:8080/api/admin/externalTools", "x_powered_by": "Servlet/3.1 JSP/2.3 (GlassFish Server Open Source Edition 4.1 Java/Oracle Corporation/1.8)"}

Pre-release docs are here: https://github.com/IQSS/dataverse/blob/cf4b864136ac1dc9b5e2793aea4a8428113d40c7/doc/sphinx-guides/source/api/external-tools.rst