If submit a query contains hms tbls which data files are compressed (bz2,lzo,lz4 ...), a error will occurs like this: ```[INTERNAL_ERROR]Only support csv data in utf8 codec``` . This is because `org.apache.doris.planner.external.HiveScanNode` set `fileFormatType` as `TFileFormatType.FORMAT_CSV_PLAIN` whether the real compress algo of data files are. This pr try to fix this problem.