---
- name: Playbook for Bob the user
  hosts: all
  tasks:
  - name: Create Bob the user
    user: name=bob shell=/bin/bash comment="User of the machine {{ ansible_hostname }}"
    
  - user: name=linda

  - name: Create user picard with comment that contains hostname of the machine
    user:
      name: picard
      shell: /bin/bash
      comment: "User of the machine {{ ansible_hostname }} for the purpose of {{ moje_promenna }}"