Fixed an issue that produced attatch file named such as ATT00002.bin (#1032)

* rename from DatasourceUserMapper to DataSourceUserMapper

* add unit test in UserMapper and WorkerGroupMapper

* change cn.escheduler to org.apache.dolphinscheduler

* add unit test in UdfFuncMapperTest

* add unit test in UdfFuncMapperTest

* remove DatabaseConfiguration

* add ConnectionFactoryTest

* cal duration in processInstancesList

* change desc to description

* change table name in mysql ddl

* change table name in mysql ddl

* change escheduler to dolphinscheduler

* change escheduler to dolphinscheduler

* change escheduler to dolphinscheduler

* remove log4j-1.2-api and modify AlertMapperTest

* remove log4j-1.2-api

* Add alertDao to spring management

* Add alertDao to spring management

* get SqlSessionFactory from MybatisSqlSessionFactoryBean

* get processDao by DaoFactory

* read druid properties in ConneciontFactory

* read druid properties in ConneciontFactory

* change get alertDao by spring to DaoFactory

* add log4j to resolve #967

* resole verify udf name error and delete udf error

* Determine if principal is empty

* Determine whether the logon user has the right to delete the project

* Fixed an issue that produced attatch file named such as ATT00002.bin

dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/utils/MailUtils.java

@@ -357,7 +357,7 @@ public class MailUtils {
         ExcelUtils.genExcelFile(content,title,xlsFilePath);
         File file = new File(xlsFilePath + Constants.SINGLE_SLASH +  title + Constants.EXCEL_SUFFIX_XLS);
         part2.attachFile(file);
-        part2.setFileName(MimeUtility.encodeText(title + Constants.EXCEL_SUFFIX_XLS));
+        part2.setFileName(MimeUtility.encodeText(title + Constants.EXCEL_SUFFIX_XLS,Constants.UTF_8,"B"));
         // add components to collection
         partList.addBodyPart(part1);
         partList.addBodyPart(part2);