message: Update bigDataPool.json
  Add `sparkConfigProperties` field in `BigDataPoolResourceInfo`
diff: "$ref": "#/definitions/LibraryRequirements",
  "description": "Library version requirements"
  },
  + "sparkConfigProperties": {
  + "$ref": "#/definitions/LibraryRequirements",
  + "description": "Spark configuration file to specify additional properties"
  + },
  "sparkVersion": {
  "type": "string",
  "description": "The Apache Spark version."
  