message: add column delimiter for SAP Table/open hub
diff: "baseRequestId": {
  "type": "object",
  "description": "The ID of request for delta loading. Once it is set, only data with requestId larger than the value of this property will be retrieved. The default value is 0. Type: integer (or Expression with resultType integer )."
  + },
  + "customRfcReadTableFunctionModule": {
  + "type": "object",
  + "description": "Specifies the custom RFC function module that will be used to read data from SAP Table. Type: string (or Expression with resultType string)."
  + },
  + "sapDataColumnDelimiter": {
  + "type": "object",
  + "description": "The single character that will be used as delimiter passed to SAP RFC as well as splitting the output data retrieved. Type: string (or Expression with resultType string)."
  }
  }
  },
  "type": "object",
  "description": "Specifies the custom RFC function module that will be used to read data from SAP Table. Type: string (or Expression with resultType string)."
  },
  + "sapDataColumnDelimiter": {
  + "type": "object",
  + "description": "The single character that will be used as delimiter passed to SAP RFC as well as splitting the output data retrieved. Type: string (or Expression with resultType string)."
  + },
  "partitionOption": {
  "description": "The partition mechanism that will be used for SAP table read in parallel.",
  "type": "string",
  