### 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
```

{'path': '/etc/system-release', 'name': 'Amazon'},
        {'path': '/etc/alpine-release', 'name': 'Alpine'},
        {'path': '/etc/arch-release', 'name': 'Archlinux', 'allowempty': True},
        {'path': '/etc/os-release', 'name': 'Archlinux'},
        {'path': '/etc/os-release', 'name': 'SUSE'},
        {'path': '/etc/SuSE-release', 'name': 'SUSE'},
        {'path': '/etc/gentoo-release', 'name': 'Gentoo'},
        {'path': '/etc/os-release', 'name': 'Debian'},
        {'path': '/etc/lsb-release', 'name': 'Debian'},
        {'path': '/etc/lsb-release', 'name': 'Mandriva'},
        {'path': '/etc/sourcemage-release', 'name': 'SMGL'},
        {'path': '/usr/lib/os-release', 'name': 'ClearLinux'},
        {'path': '/etc/coreos/update.conf', 'name': 'Coreos'},
        {'path': '/etc/flatcar/update.conf', 'name': 'Flatcar'},
        {'path': '/etc/os-release', 'name': 'NA'},
    )
    SEARCH_STRING = {
        'OracleLinux': 'Oracle Linux',
        'RedHat': 'Red Hat',
        'Altlinux': 'ALT',
        'SMGL': 'Source Mage GNU/Linux',
    }
    
    
    
    OS_RELEASE_ALIAS = {
        'Archlinux': 'Arch Linux'
    }
    STRIP_QUOTES = r'\'\"\\'
    def __init__(self, module):