message: update default storage conf
diff: ############## rocksdb Options ##############
  --rocksdb_disable_wal=true
  -# rocksdb DBOptions, each option will be given as <option_name>:<option_value> separated by ;
  ---rocksdb_db_options=
  -# rocksdb ColumnFamilyOptions, each option will be given as <option_name>:<option_value> separated by ;
  ---rocksdb_column_family_options=
  -# rocksdb BlockBasedTableOptions, each option will be given as <option_name>:<option_value> separated by ;
  ---rocksdb_block_based_table_options=
  +# rocksdb DBOptions in json, each name and value of option is a string, given as "option_name":"option_value" separated by comma
  +--rocksdb_db_options={}
  +# rocksdb ColumnFamilyOptions in json, each name and value of option is string, given as "option_name":"option_value" separated by comma
  +--rocksdb_column_family_options={}
  +# rocksdb BlockBasedTableOptions in json, each name and value of option is string, given as "option_name":"option_value" separated by comma
  +--rocksdb_block_based_table_options={}
  