Fix: Upgrade forwardzones zones after adding newer replica
    
    Patch fixes issue, when forwardzones has not been upgraded after adding
    replica >=4.0 into topology with IPA 3.x servers.
    
    Ticket: https://fedorahosted.org/freeipa/ticket/4818
    Reviewed-By: Petr Spacek <pspacek@redhat.com>