Update extraneous k3s versions to v0.5.0

group_vars/all.yml

-k3s_version: v0.3.0
+k3s_version: v0.5.0
 ansible_user: debian
 systemd_dir: /etc/systemd/system
 master_ip: "{{ hostvars[groups['master'][0]]['ansible_host'] | default(groups['master'][0]) }}"