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##### 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)
```

dragonfly_facts = {
            'distribution_release': platform.release()
        }
        rc, out, dummy = self.module.run_command("/sbin/sysctl -n kern.version")
        match = re.search(r'v(\d+)\.(\d+)\.(\d+)-(RELEASE|STABLE|CURRENT).*', out)
        if match:
            dragonfly_facts['distribution_major_version'] = match.group(1)
            dragonfly_facts['distribution_version'] = '%s.%s.%s' % match.groups()[:3]
        return dragonfly_facts
    def get_distribution_NetBSD(self):
        netbsd_facts = {}
        
        platform_release = platform.release()
        netbsd_facts['distribution_major_version'] = platform_release.split('.')[0]
        return netbsd_facts
    def get_distribution_SMGL(self):
        smgl_facts = {}
        smgl_facts['distribution'] = 'Source Mage GNU/Linux'
        return smgl_facts
    def get_distribution_SunOS(self):
        sunos_facts = {}
        data = get_file_content('/etc/release').splitlines()[0]
        if 'Solaris' in data:
            
            uname_r = get_uname(self.module, flags=['-r'])
            ora_prefix = ''
            if 'Oracle Solaris' in data:
                data = data.replace('Oracle ', '')
                ora_prefix = 'Oracle '