- hosts: all
  vars:
    username: "vagrant"
    crypted_password: "$6$mysecretsalt$EDJBe8bLUKjct3jRv7d.D3RFGjkJJ7NnK0zve2AYB2TV5Cv48lWvAfRuGqjf8e6DNFWdKpa82Lcx1VUPK6R1k."
  remote_user: root

  tasks:
  - name: Check if user exists
    shell: /usr/bin/getent passwd | awk -F":" '{print $1}' | grep {{ username }}
    register: etc_passwd

  - debug:
      var: etc_passwd.stdout

  - name: Change password to User
    user: name="{{username}}" password="{{ crypted_password }}"
    when: '"{{username }}" in etc_passwd.stdout_lines'