### Summary

Since dnf is not installing the packages when running `dnf download --downloadonly...`, it does not require root access to pull down the rpms. It would be nice if ansible followed the same pattern.

### Issue Type

Feature Idea

### Component Name

dnf

### Additional Information

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)
    - name: Download RPM's
      dnf:
        name: "{{ item }}"
        state: present
        download_only: yes
        download_dir: "{{ rpms_path }}"
      loop: "{{ rpms }}"
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
if int(dnf.__version__.split(".")[0]) >= 2:
            pkgs = list(sorted(self.base.add_remote_rpms(list(filenames)), reverse=True))
        else:
            pkgs = []
            try:
                for filename in filenames:
                    pkgs.append(self.base.add_remote_rpm(filename))
            except IOError as e:
                if to_text("Can not load RPM file") in to_text(e):
                    self.module.fail_json(
                        msg="Error occurred attempting remote rpm install of package: {0}. {1}".format(filename, to_native(e)),
                        results=[],
                        rc=1,
                    )
        if self.update_only: