trusts: Add conversion from SID to object name
Since SID is often used as a unique identifier for AD objects, we need to convert
a SID to actual object name in the AD.
Part of: https://fedorahosted.org/freeipa/ticket/3979
Reviewed-By: Petr Viktorin <pviktori@redhat.com>
Reviewed-By: Petr Vobornik <pvoborni@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>