Merge remote-tracking branch 'origin/master_saas' into master_saas

mec-biz/src/main/java/com/ym/mec/biz/dal/dto/TenantPreJoinDto.java

@@ -17,7 +17,6 @@ public class TenantPreJoinDto implements Serializable {
     @ApiModelProperty(value = "公司全称")
     private String tsignName;
 
-    @NotNull(message = "推荐人不能为空")
     @ApiModelProperty(value = "推荐人")
     private Integer recommender;