Fix kubespray flatcar ansible_os_family and ansible_distribution (#8029)

roles/bootstrap-os/tasks/main.yml

roles/container-engine/containerd/tasks/main.yml

roles/container-engine/docker/handlers/main.yml

roles/container-engine/docker/tasks/main.yml

roles/container-engine/docker/tasks/systemd.yml

roles/download/defaults/main.yml

roles/download/tasks/prep_download.yml

roles/etcd/meta/main.yml

roles/etcd/tasks/upd_ca_trust.yml

roles/kubernetes/node/tasks/install.yml

roles/kubernetes/preinstall/handlers/main.yml

roles/kubernetes/preinstall/tasks/0020-verify-settings.yml

roles/kubernetes/preinstall/tasks/0040-set_facts.yml

roles/kubernetes/preinstall/tasks/0060-resolvconf.yml

roles/kubernetes/preinstall/tasks/0070-system-packages.yml

...ubernetes/preinstall/tasks/0080-system-configurations.yml

roles/kubernetes/preinstall/tasks/main.yml

roles/kubespray-defaults/defaults/main.yaml

roles/network_plugin/macvlan/handlers/main.yml

roles/network_plugin/macvlan/tasks/main.yml