ui/lib/shared/addon/components/modal-kubectl/template.hbs

{{container-shell
  url=url
  showProtip=false
  displayName=scope.currentCluster.displayName
  dismiss=(action "cancel")
  disconncted=(action "cancel")
}}

<div class="footer-actions">
  <button {{action "cancel"}} class="btn bg-primary">{{t 'generic.closeModal'}}</button>
</div>