Merge branch 'hotfix-case-export' into 'Release'

修复测试案例导出路径问题







See merge request !1263

mooctest-site-server/src/main/java/cn/iselab/mooctest/site/web/ctrl/CaseImportAndExportController.java

@@ -33,7 +33,7 @@ public class CaseImportAndExportController {
     @Autowired
     private MongoAPIService mongoAPIService;
 
-    private String rootPath = "/var/www/download";
+    private String rootPath = "/var/www/download/";
     //private String rootPath = "H://download/";
 
     private String rootZipFileName = "resource.zip";