Use AD LDAP probing to create trusted domain ID range
    
    When creating a trusted domain ID range, probe AD DC to get
    information about ID space leveraged by POSIX users already
    defined in AD, and create an ID range with according parameters.
    
    For more details:
    http://www.freeipa.org/page/V3/Use_posix_attributes_defined_in_AD
    https://fedorahosted.org/freeipa/ticket/3649