ansible/roles/ubuntu_base/tasks/users.yml

---
- name: "Add users"
  user:
    name: "{{ item.name }}"
    comment: "{{ item.comment }}"
    password: "{{ item.password }}"
    update_password: "on_create"
    groups:  "{{ item.groups }}"
  loop: "{{ users | default([]) }}"

- name: "Add ssh authorized_keys"
  authorized_key:
    user: "{{ item.0.name }}"
    key: "{{ item.1 }}"
  with_subelements:
  - "{{ users | default([]) }}"
  - keys

- name: "Add ssh authorized_keys to root user"
  authorized_key:
    user: "root"
    key: "{{ item.1 }}"
  with_subelements:
  - "{{ users | default([]) }}"
  - keys