So far, only members of ops have access (due to a blanket rule).
Additionally, at least Chris Albon, Andy Craze and Kevin Bazira need to be able to log in and become root.
More context for the request: the ML team is bootstrapping an entire new stack and rapid development/testing is really the key to speed up the work. The plan is to add Kubernets and Kubeflow on top, and of course translate the work to puppet as soon as possible (likely as the team manages to achieve milestones). Eventually the hosts will be reimaged and full root shouldn't be needed anymore (but probably some more specific sudo rules will be necessary).