<!--- 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)
```

slackware_facts = {}
        if 'Slackware' not in data:
            return False, slackware_facts  
        slackware_facts['distribution'] = name
        version = re.findall(r'\w+[.]\w+\+?', data)
        if version:
            slackware_facts['distribution_version'] = version[0]
        return True, slackware_facts
    def parse_distribution_file_Amazon(self, name, data, path, collected_facts):
        amazon_facts = {}
        if 'Amazon' not in data:
            return False, amazon_facts
        amazon_facts['distribution'] = 'Amazon'
        version = [n for n in data.split() if n.isdigit()]
        version = version[0] if version else 'NA'
        amazon_facts['distribution_version'] = version
        return True, amazon_facts
    def parse_distribution_file_OpenWrt(self, name, data, path, collected_facts):
        openwrt_facts = {}
        if 'OpenWrt' not in data:
            return False, openwrt_facts  
        openwrt_facts['distribution'] = name
        version = re.search('DISTRIB_RELEASE="(.*)"', data)
        if version:
            openwrt_facts['distribution_version'] = version.groups()[0]
        release = re.search('DISTRIB_CODENAME="(.*)"', data)
        if release:
            openwrt_facts['distribution_release'] = release.groups()[0]
        return True, openwrt_facts
    def parse_distribution_file_Alpine(self, name, data, path, collected_facts):