pwpolicy: do not run klist on import
    
    On pwpolicy module import, "klist -V" is run to determine if the installed
    krb5 version supports account lockout (>= 1.8).
    
    Remove the check, as we require a krb5 version which does support account
    lockout (1.12).
    
    https://fedorahosted.org/freeipa/ticket/6418
    
    Reviewed-By: Petr Spacek <pspacek@redhat.com>
    Reviewed-By: Martin Basti <mbasti@redhat.com>