Code block setup

As preferred by ansible-lint, it adds readability to the blocks:

- name: Some descriptive code block
  when:                                        # when after name
    - role_value_is true
  block:
    - name: Some subtask in the block
      ansible.builtin.package:                # full package name
        name:
          - dnf
          - firewalld
        state: present
                                              # empty newline at the end