consul/ui-v2/app/templates/components/tab-section.hbs

<input onchange={{action onchange}} type="radio" name="radiogroup_{{name}}" id="radiogroup_{{name}}_{{slugify id}}" value="{{id}}" checked={{if selected 'checked'}} />
<div role="tabpanel" id="radiogroup_{{name}}_{{id}}_panel">
    {{yield}}
</div>