<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
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##### SUMMARY
<!--- Explain the problem briefly below -->
Ansible reports CentOS Linux and CentOS Stream as the same distribution therefore there is no way to differentiate between the distributions in the standard ansible facts.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ansible_facts

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```
ansible 2.10.4
  config file = /home/aaron/git/astrolinux-bootstrap/ansible.cfg
  configured module search path = ['/home/xxx/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/xxx/virtualenv/ansible_py3/lib/python3.6/site-packages/ansible
  executable location = /home/xxx/virtualenv/ansible_py3/bin/ansible
  python version = 3.6.8 (default, Dec  3 2020, 18:11:24) [GCC 8.4.1 20200928 (Red Hat 8.4.1-1)]
```

##### CONFIGURATION
n/a

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->
OS:  CentOS Stream 8

##### STEPS TO REPRODUCE
n/a

<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
CentOS Stream should be reported as a different distribution from CentOS Linux.

##### ACTUAL RESULTS
n/a
aix_facts = {}
        rc, out, err = self.module.run_command("/usr/bin/oslevel")
        data = out.split('.')
        aix_facts['distribution_major_version'] = data[0]
        if len(data) > 1:
            aix_facts['distribution_version'] = '%s.%s' % (data[0], data[1])
            aix_facts['distribution_release'] = data[1]
        else:
            aix_facts['distribution_version'] = data[0]
        return aix_facts
    def get_distribution_HPUX(self):
        hpux_facts = {}
        rc, out, err = self.module.run_command(r"/usr/sbin/swlist |egrep 'HPUX.*OE.*[AB].[0-9]+\.[0-9]+'", use_unsafe_shell=True)
        data = re.search(r'HPUX.*OE.*([AB].[0-9]+\.[0-9]+)\.([0-9]+).*', out)
        if data:
            hpux_facts['distribution_version'] = data.groups()[0]
            hpux_facts['distribution_release'] = data.groups()[1]
        return hpux_facts
    def get_distribution_Darwin(self):
        darwin_facts = {}
        darwin_facts['distribution'] = 'MacOSX'
        rc, out, err = self.module.run_command("/usr/bin/sw_vers -productVersion")
        data = out.split()[-1]
        if data:
            darwin_facts['distribution_major_version'] = data.split('.')[0]
            darwin_facts['distribution_version'] = data
        return darwin_facts
    def get_distribution_FreeBSD(self):