Don't try to validate the HSM arguments on a non-HSM installation
    
    If there is no token name it is safe to assume that an HSM
    installation is not requested. The validator assumes that if
    there is a token name then the library and password are also
    provided.
    
    Fixes: https://pagure.io/freeipa/issue/9593
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>