Ticket #47420 - An upgrade script 80upgradednformat.pl fails to handle a server instance name incuding '-'
    
    Bug description: If a server instance name contains '-', e.g.,
    slapd-TEST-SERVER, it accidentally picks up the first part of
    the instance name 'TEST'.
    
    Fix description: Replacing "split(/-/, $instancedir)" with
    "split(/-/, $instancedir, 2)".
    
    https://fedorahosted.org/389/ticket/47420
    
    Reviewed by Rich (Thank you!!)