### Summary

Ansible no longer returns distribution facts for my Amazon Linux 2 instances after #73767.

### Issue Type

Bug Report

### Component Name

setup

### Ansible Version

```console (paste below)
$ ansible --version
ansible [core 2.11.0b2.post0]  (detached HEAD 30c465c1a9) last updated 2021/03/17 18:53:46 (GMT -400)
  config file = /home/ec2-user/ansible-aws-coll/ansible/ansible.cfg
  configured module search path = ['/home/ec2-user/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/ec2-user/tmp/ansible/lib/ansible
  ansible collection location = /home/ec2-user/ansible-aws-coll/ansible/collections
  executable location = /home/ec2-user/tmp/ansible/bin/ansible
  python version = 3.8.5 (default, Feb 18 2021, 01:24:20) [GCC 7.3.1 20180712 (Red Hat 7.3.1-12)]
  jinja version = 2.11.3
  libyaml = True
```


### Configuration

```console (paste below)
$ ansible-config dump --only-changed
DEVEL_WARNING(env: ANSIBLE_DEVEL_WARNING) = False
```


### OS / Environment

Amazon Linux 2

### Steps to Reproduce

```
ansible localhost -m setup | grep distribution
```


### Expected Results

With 78d3810fdf:
```
[WARNING]: No inventory was parsed, only implicit localhost is available
        "ansible_distribution": "Amazon",
        "ansible_distribution_file_parsed": true,
        "ansible_distribution_file_path": "/etc/system-release",
        "ansible_distribution_file_variety": "Amazon",
        "ansible_distribution_major_version": "2",
        "ansible_distribution_release": "NA",
        "ansible_distribution_version": "2",
```

### Actual Results

```console (paste below)
[WARNING]: No inventory was parsed, only implicit localhost is available
```

clear_facts = {}
        if "clearlinux" not in name.lower():
            return False, clear_facts
        pname = re.search('NAME="(.*)"', data)
        if pname:
            if 'Clear Linux' not in pname.groups()[0]:
                return False, clear_facts
            clear_facts['distribution'] = pname.groups()[0]
        version = re.search('VERSION_ID=(.*)', data)
        if version:
            clear_facts['distribution_major_version'] = version.groups()[0]
            clear_facts['distribution_version'] = version.groups()[0]
        release = re.search('ID=(.*)', data)
        if release:
            clear_facts['distribution_release'] = release.groups()[0]
        return True, clear_facts
    def parse_distribution_file_CentOS(self, name, data, path, collected_facts):
        centos_facts = {}
        if 'CentOS Stream' in data:
            centos_facts['distribution_release'] = 'Stream'
            return True, centos_facts
        return False, centos_facts
class Distribution(object):
    """
    This subclass of Facts fills the distribution, distribution_version and distribution_release variables
    To do so it checks the existence and content of typical files in /etc containing distribution information
    This is unit tested. Please extend the tests to cover all distributions if you have them available.
    """