---
- hosts: all
  become: true
  vars:
    sudoers: ansible

  tasks:
    - name: Place repo-file mailserver.guru for CentOS 8 right in place
      copy:
        src: /home/django/ansible/files/CentOS8/mailserver.guru.repo 
        dest: /etc/yum.repos.d/
      when:
        - ansible_facts['distribution'] == "CentOS"
        - ansible_facts['distribution_major_version'] == "8"

    - name: Place repo-file mailserver.guru for CentOS 7 right in place 
      copy:
        src: files/CentOS7/mailserver.guru.repo 
        dest: /etc/yum.repos.d/
      when:
        - ansible_facts['distribution'] == "CentOS"
        - ansible_facts['distribution_major_version'] == "7"
...