fix(接口测试): 修复定时清理不生效的缺陷

--bug=1039529 --user=王孝刚 【项目管理】项目与权限-接口测试报告保留时间设置3小时，场景报告超过3小时的未删除
https://www.tapd.cn/55049933/s/1499849

backend/framework/sdk/src/main/java/io/metersphere/sdk/util/ShareUtil.java

@@ -3,7 +3,6 @@ package io.metersphere.sdk.util;
 import org.apache.commons.lang3.StringUtils;
 
 import java.time.Instant;
-import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.ZoneId;
 
@@ -50,8 +49,8 @@ public class ShareUtil {
     }
 
     public static long getCleanDate(String expr) {
-        LocalDate date = null;
-        LocalDate localDate = LocalDate.now();
+        LocalDateTime date = null;
+        LocalDateTime localDate = LocalDateTime.now();
         long timeMills = 0;
         if (StringUtils.isNotBlank(expr)) {
             try {
@@ -63,6 +62,8 @@ public class ShareUtil {
                     date = localDate.minusMonths(quantity);
                 } else if (StringUtils.equals(unit, UNIT_YEAR)) {
                     date = localDate.minusYears(quantity);
+                } else if (StringUtils.equals(unit, UNIT_HOUR)) {
+                    date = localDate.minusHours(quantity);
                 } else {
                     LogUtils.error("clean up expr parse error. expr : " + expr);
                 }
@@ -72,7 +73,7 @@ public class ShareUtil {
             }
         }
         if (date != null) {
-            timeMills = date.atStartOfDay(ZoneId.systemDefault()).toInstant().toEpochMilli();
+            timeMills = date.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
         }
         return timeMills;
     }