battleevent instance_id 추가

src/main/java/com/caliverse/admin/domain/service/BattleEventService.java

@@ -117,6 +117,7 @@ public class BattleEventService {
             LocalDateTime end_dt = start_dt.plusHours(12);
             battleEventRequest.setEventEndDt(end_dt);
         }
+        battleEventRequest.setInstanceId(CommonConstants.BATTLE_INSTANCE_ID);  //고정값으로 넣고 추후 맵정보가 늘어나면 선택하는 걸로
 
         int operation_time = calcEndTime(battleEventRequest);
         battleEventRequest.setEventOperationTime(operation_time);