tripleo-validation doesn't consider the deployment change in OSP17. We have a guide that a user should run the validation before the deployment. However, many of tests don't take into account the deployment change in OSP17. Add a note about the validations that do not work.
Updated doc at 17.0: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/17.0/html-single/director_installation_and_usage/index#proc_validating-your-overcloud-configuration_ironic_provisioning The change will also appear in 17.1 GA.