[To rel/0.11] Fix windows encoding bug (#2338)

server/src/assembly/resources/sbin/start-server.bat

@@ -90,7 +90,9 @@ set JAVA_OPTS=-ea^
  -DIOTDB_HOME="%IOTDB_HOME%"^
  -DTSFILE_HOME="%IOTDB_HOME%"^
  -DTSFILE_CONF="%IOTDB_CONF%"^
- -DIOTDB_CONF="%IOTDB_CONF%"
+ -DIOTDB_CONF="%IOTDB_CONF%"^
+ -Dsun.jnu.encoding=UTF-8^
+ -Dfile.encoding=UTF-8
 
 @REM ***** CLASSPATH library setting *****
 @REM Ensure that any user defined CLASSPATH variables are not used on startup