message: Rename MPI to CustomMPI to match Batch AI service
diff: },
  "toolType": {
  "title": "The toolkit type of this job.",
  - "description": "Possible values are: cntk, tensorflow, caffe, caffe2, chainer, pytorch, custom, mpi, horovod.",
  + "description": "Possible values are: cntk, tensorflow, caffe, caffe2, chainer, pytorch, custom, custommpi, horovod.",
  "$ref": "#/definitions/ToolType"
  },
  "cntkSettings": {
  "caffe2",
  "chainer",
  "horovod",
  - "mpi",
  + "custommpi",
  "custom"
  ],
  "x-ms-enum": {
  