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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)
```

def __init__(self, module):
        self.module = module
    def update_current_and_permanent_hostname(self):
        self.unimplemented_error()
    def update_current_hostname(self):
        self.unimplemented_error()
    def update_permanent_hostname(self):
        self.unimplemented_error()
    def get_current_hostname(self):
        self.unimplemented_error()
    def set_current_hostname(self, name):
        self.unimplemented_error()
    def get_permanent_hostname(self):
        self.unimplemented_error()
    def set_permanent_hostname(self, name):
        self.unimplemented_error()
    def unimplemented_error(self):
        system = platform.system()
        distribution = get_distribution()
        if distribution is not None:
            msg_platform = '%s (%s)' % (system, distribution)
        else:
            msg_platform = system
        self.module.fail_json(
            msg='hostname module cannot be used on platform %s' % msg_platform)
class Hostname(object):