feat:vip活动增加适用学生类型

mec-biz/src/main/java/com/ym/mec/biz/dal/page/VipGroupActivityQueryInfo.java

@@ -14,7 +14,7 @@ public class VipGroupActivityQueryInfo extends QueryInfo {
     private Boolean enable;
 
     @ApiModelProperty(value = "适用学生类型:-1：所有；0：老用户；1：新用户")
-    private int  applyToStudentType = -1;
+    private int  applyToStudentType;
 
     public Boolean getEnable() {
         return enable;