[Samba] samba-tool user disable doesn't change any object attributes?

[Reese Wang]

I used `samba-tool user disable testuser` to disable a user and
`samba-tool user show testuser` to display the user object and found
nothing was changed. And I can still get the user using filter
(&(objectClass=user)(sAMAccountName=testuser)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))

Shouldn't `samba-tool user disable` change userAccountControl to 2 or something?