<!--- 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
hostname module fails on linux pardus distributions.

##### 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 VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```
3.8.2
```

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

```

##### OS / ENVIRONMENT
Pardus Gnu/Linux 19.3


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

<!--- Paste example playbooks or commands between quotes below -->
```
 - name: set hostname
    hostname:
      name: "pardus"
```

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

##### EXPECTED RESULTS
should set hostname on pardus as well


##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```
hostname module cannot be used on platform Linux (pardus)
```

for ddict in self.OSDIST_LIST:
            name = ddict['name']
            path = ddict['path']
            allow_empty = ddict.get('allowempty', False)
            has_dist_file, dist_file_content = self._get_dist_file_content(path, allow_empty=allow_empty)
            
            
            if has_dist_file and allow_empty:
                dist_file_facts['distribution'] = name
                dist_file_facts['distribution_file_path'] = path
                dist_file_facts['distribution_file_variety'] = name
                break
            if not has_dist_file:
                
                continue
            parsed_dist_file, parsed_dist_file_facts = self._parse_dist_file(name, dist_file_content, path, dist_file_facts)
            
            if parsed_dist_file:
                dist_file_facts['distribution'] = name
                dist_file_facts['distribution_file_path'] = path
                
                
                
                dist_file_facts['distribution_file_variety'] = name
                dist_file_facts['distribution_file_parsed'] = parsed_dist_file
                dist_file_facts.update(parsed_dist_file_facts)
                break
        return dist_file_facts
    
    def parse_distribution_file_Slackware(self, name, data, path, collected_facts):