Multicluster testing currently uses the configmap which is deprecated. To finish the deprecation process and remove the configmap from the system, the e2e tests need modifications to register secrets as documented here:
https://istio.io/docs/setup/kubernetes/multicluster-install/#gather-credential-files-from-remote

This will make testing line up with documentation.