修改默认主页
格式:
vhost
mod
entityname:default_doc
sitename:ftpaccount
default_doc:defaultdoc
.

返回:
成功:
200 Command completed successfully
.

缺少属性:
504 Missing required attribute
Message: Missing Attribute [缺少的必要的属性名称]
.

没有权限:
529 No Permission
.

系统忙:
521 System is busy, try again later
.