Ticket #48394 - lower password history minimum to 1
    
    Description: Per request, lower the minimum value of the kept password
    history from 2 to 1 for both Global password policy as well as for
    Fine-grained password policy.
    
    https://fedorahosted.org/389/ticket/48394
    
    Reviewed by firstyear@redhat.com (Thank you, William!!)