Ensure that file 1 (authorized_keys) contains file 2 (id_ed25519.pub)

Hi all,

just beginning my adventure with Ansible.

Following situation: I'm trying to ensure that a user called "ansible" is present on all hosts that should be managed by Ansible.
Creating group and user works so far. Now I'm trying to enable password-less SSH login for that user by copying a well known key
pair to the host.

### playbook.yml

that is what the authorized_keys module is for
http://docs.ansible.com/ansible/authorized_key_module.html, use that
instead to copy the public key. Also you should not be copying the
private key.

Thanks Brian!