<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Explain the problem briefly below -->

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
Setup module and facts about de Operating System is detecting ansible_os_family as "Pop!_OS".
This distribution is based on Ubuntu, so it should be "Debian" the desired result

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```
ansible 2.9.6
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/moucho/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.8.2 (default, Apr 27 2020, 15:53:34) [GCC 9.3.0]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```
default configuration
```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->
Pop!_OS 20.04 LTS

##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
ansible localhost -m setup

<!--- Paste example playbooks or commands between quotes below -->
<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
ansible_os_family: "Debian"

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->
ansible_os_family: "Pop!_OS"
<!--- Paste verbatim command output between quotes -->

{'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/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):
        self.module = module
    def _get_file_content(self, path):
        return get_file_content(path)
    def _get_dist_file_content(self, path, allow_empty=False):
        
        if not _file_exists(path, allow_empty=allow_empty):
            return False, None
        data = self._get_file_content(path)
        return True, data
    def _parse_dist_file(self, name, dist_file_content, path, collected_facts):