Samba: keep in sync NT and shadow passwords
In a system without nethserver-samba installed, all users inside LDAP don't have any samba-releated field.
After nethserver-samba installation, if the administrator grants samba service access to an existing user, the user must change its own password to keep in sync NT hash and shadow hash. Otherwise the user can't access Samba shared.
The problem doesn't affect users created after installation of nethserver-samba package.
The current workaround is to install nethserver-samba anytime the system needs multi-user support (nethserver-directory).