* ud-useradd: support usergroups [HE].
* ud-host/userdir-ldap.schema: Add 'purpose', 'physicalHost' to
debianServer schema and teach ud-host about [HE].
* ud-useradd: support usergroups [HE].
* ud-host/userdir-ldap.schema: Add 'purpose', 'physicalHost' to
debianServer schema and teach ud-host about [HE].