<!--- 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 -->

"input": {
            "/etc/os-release": (
                "NAME=\"Ubuntu\"\nVERSION=\"16.04 LTS (Xenial Xerus)\"\nID=ubuntu\nID_LIKE=debian\nPRETTY_NAME=\"Ubuntu 16.04 LTS\"\n"
                "VERSION_ID=\"16.04\"\nHOME_URL=\"http://www.ubuntu.com/\"\nSUPPORT_URL=\"http://help.ubuntu.com/\"\n"
                "BUG_REPORT_URL=\"http://bugs.launchpad.net/ubuntu/\"\nUBUNTU_CODENAME=xenial\n"
            ),
            "/etc/lsb-release": "DISTRIB_ID=Ubuntu\nDISTRIB_RELEASE=16.04\nDISTRIB_CODENAME=xenial\nDISTRIB_DESCRIPTION=\"Ubuntu 16.04 LTS\"\n"
        },
        "name": "Ubuntu 16.04",
        "result": {
            "distribution_release": "xenial",
            "distribution": "Ubuntu",
            "distribution_major_version": "16",
            "os_family": "Debian",
            "distribution_version": "16.04"
        }
    },
    {
        'name': "Ubuntu 10.04 guess",
        'input':
            {
                '/etc/lsb-release': 'DISTRIB_ID=Ubuntu\nDISTRIB_RELEASE=10.04\nDISTRIB_CODENAME=lucid\nDISTRIB_DESCRIPTION="Ubuntu 10.04.4 LTS',
            },
        'platform.dist': ('Ubuntu', '10.04', 'lucid'),
        'distro': {
            'codename': 'lucid',
            'id': 'ubuntu',
            'name': 'Ubuntu',
            'version': '10.04',
            'version_best': '10.04.1',