<!--- 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)
```

{'path': '/etc/sourcemage-release', 'name': 'SMGL'},
        {'path': '/usr/lib/os-release', 'name': 'ClearLinux'},
        {'path': '/etc/coreos/update.conf', 'name': 'Coreos'},
        {'path': '/etc/flatcar/update.conf', 'name': 'Flatcar'},
        {'path': '/etc/os-release', 'name': 'NA'},
    )
    SEARCH_STRING = {
        'OracleLinux': 'Oracle Linux',
        'RedHat': 'Red Hat',
        'Altlinux': 'ALT',
        'SMGL': 'Source Mage GNU/Linux',
    }
    
    
    
    OS_RELEASE_ALIAS = {
        'Archlinux': 'Arch Linux'
    }
    STRIP_QUOTES = r'\'\"\\'
    def __init__(self, module):
        self.module = module
    def _get_file_content(self, path):
        return get_file_content(path)
    def _get_dist_file_content(self, path, allow_empty=False):
        
        if not _file_exists(path, allow_empty=allow_empty):
            return False, None
        data = self._get_file_content(path)
        return True, data
    def _parse_dist_file(self, name, dist_file_content, path, collected_facts):