Use `connection: local` when `delegate_to: localhost` (#6322)

roles/bastion-ssh-config/tasks/main.yml

roles/download/tasks/download_container.yml

roles/download/tasks/download_file.yml

roles/download/tasks/prep_download.yml

roles/kubernetes/client/tasks/main.yml

roles/kubernetes/preinstall/tasks/0030-pre_upgrade.yml

roles/kubernetes/preinstall/tasks/0090-etchosts.yml

roles/kubespray-defaults/tasks/fallback_ips.yml

roles/kubespray-defaults/tasks/fallback_ips_gather.yml

roles/kubespray-defaults/tasks/no_proxy.yml

scripts/collect-info.yaml

tests/cloud_playbooks/delete-aws.yml