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##### SUMMARY
When i collect facts from TrueNAS, with the command : `ansible truenas -m setup | grep "ansible_distribution"`
the variable "ansible_distribution_major_version" is missing.
When i use same command on debian host, the variable is stell here

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
lib/ansible/module_utils/facts

##### ANSIBLE VERSION
```
ansible 2.10.2
  config file = /srv/ansible/ansible.cfg
  configured module search path = ['/srv/ansible/library']
  ansible python module location = /srv/ansible-venv/lib/python3.7/site-packages/ansible
  executable location = /srv/ansible-venv/bin/ansible
  python version = 3.7.3 (default, Dec 20 2019, 18:57:59) [GCC 8.3.0]
```

##### CONFIGURATION
<!--- Paste verbatim output from "" between quotes -->
```
ANSIBLE_FORCE_COLOR(/srv/ansible/ansible.cfg) = True
DEFAULT_HOST_LIST(/srv/ansible/ansible.cfg) = ['/srv/ansible/site.host']
DEFAULT_JINJA2_EXTENSIONS(/srv/ansible/ansible.cfg) = jinja2.ext.do
DEFAULT_MANAGED_STR(/srv/ansible/ansible.cfg) = Gestion par Ansible: {file} modifie le %Y-%m-%d %H:%M:%S par {uid} depuis {host}
DEFAULT_MODULE_PATH(/srv/ansible/ansible.cfg) = ['/srv/ansible/library']
DEFAULT_ROLES_PATH(/srv/ansible/ansible.cfg) = ['/srv/ansible/roles']
DEFAULT_STDOUT_CALLBACK(/srv/ansible/ansible.cfg) = yaml
DISPLAY_SKIPPED_HOSTS(/srv/ansible/ansible.cfg) = False
INTERPRETER_PYTHON(/srv/ansible/ansible.cfg) = auto_silent
RETRY_FILES_ENABLED(/srv/ansible/ansible.cfg) = False

```

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


##### STEPS TO REPRODUCE
ansible truenas -m setup | grep "ansible_distribution"

##### EXPECTED RESULTS
```
...
        "ansible_distribution": "FreeBSD",
        "ansible_distribution_release": "12.2-RC3",
        "ansible_distribution_major_version": "12",
        "ansible_distribution_version": "FreeBSD 12.2-RC3 7c4ec6ff02c(HEAD) TRUENAS",
...
```


##### ACTUAL RESULTS
```
...
        "ansible_distribution": "FreeBSD",
        "ansible_distribution_release": "12.2-RC3",
        "ansible_distribution_version": "FreeBSD 12.2-RC3 7c4ec6ff02c(HEAD) TRUENAS",
...
```

alpine_facts = {}
        alpine_facts['distribution'] = 'Alpine'
        alpine_facts['distribution_version'] = data
        return True, alpine_facts
    def parse_distribution_file_SUSE(self, name, data, path, collected_facts):
        suse_facts = {}
        if 'suse' not in data.lower():
            return False, suse_facts  
        if path == '/etc/os-release':
            for line in data.splitlines():
                distribution = re.search("^NAME=(.*)", line)
                if distribution:
                    suse_facts['distribution'] = distribution.group(1).strip('"')
                
                distribution_version = re.search(r'^VERSION_ID="?([0-9]+\.?[0-9]*)"?', line)
                if distribution_version:
                    suse_facts['distribution_version'] = distribution_version.group(1)
                    suse_facts['distribution_major_version'] = distribution_version.group(1).split('.')[0]
                if 'open' in data.lower():
                    release = re.search(r'^VERSION_ID="?[0-9]+\.?([0-9]*)"?', line)
                    if release:
                        suse_facts['distribution_release'] = release.groups()[0]
                elif 'enterprise' in data.lower() and 'VERSION_ID' in line:
                    
                    release = re.search(r'^VERSION_ID="?[0-9]+\.?([0-9]*)"?', line)
                    if release.group(1):