对象新增权限属性：externalSharingModel、sharingModel
Created by: baozhoutao
https://help.salesforce.com/articleView?err=1&id=sharing_model_fields.htm&type=5 调整用户权限计算：根据is_external值获取对象中externalSharingModel、sharingModel属性计算默认权限，然后叠加权限集
Created by: baozhoutao
https://help.salesforce.com/articleView?err=1&id=sharing_model_fields.htm&type=5 调整用户权限计算：根据is_external值获取对象中externalSharingModel、sharingModel属性计算默认权限，然后叠加权限集