<!--- 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 -->

for family, names in OS_FAMILY_MAP.items():
        for name in names:
            OS_FAMILY[name] = family
    def __init__(self, module):
        self.module = module
    def get_distribution_facts(self):
        distribution_facts = {}
        
        
        
        system = platform.system()
        distribution_facts['distribution'] = system
        distribution_facts['distribution_release'] = platform.release()
        distribution_facts['distribution_version'] = platform.version()
        systems_implemented = ('AIX', 'HP-UX', 'Darwin', 'FreeBSD', 'OpenBSD', 'SunOS', 'DragonFly', 'NetBSD')
        if system in systems_implemented:
            cleanedname = system.replace('-', '')
            distfunc = getattr(self, 'get_distribution_' + cleanedname)
            dist_func_facts = distfunc()
            distribution_facts.update(dist_func_facts)
        elif system == 'Linux':
            distribution_files = DistributionFiles(module=self.module)
            
            dist_file_facts = distribution_files.process_dist_files()
            distribution_facts.update(dist_file_facts)
        distro = distribution_facts['distribution']
        
        distribution_facts['os_family'] = self.OS_FAMILY.get(distro, None) or distro
        return distribution_facts
    def get_distribution_AIX(self):