### Summary

Add RedOS support for hostname module plugin

### Issue Type

Feature Idea

### Component Name

hostname

### Additional Information

Just add class of redos for hostname
```
class RedosHostname(Hostname):
    platform = 'Linux'
    distribution = 'RED'
    strategy_class = SystemdStrategy
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
platform = 'Linux'
    distribution = 'Kali'
    strategy_class = FileStrategy
class ParrotHostname(Hostname):
    platform = 'Linux'
    distribution = 'Parrot'
    strategy_class = FileStrategy
class UbuntuHostname(Hostname):
    platform = 'Linux'
    distribution = 'Ubuntu'
    strategy_class = FileStrategy
class LinuxmintHostname(Hostname):
    platform = 'Linux'
    distribution = 'Linuxmint'
    strategy_class = FileStrategy
class LinaroHostname(Hostname):
    platform = 'Linux'
    distribution = 'Linaro'
    strategy_class = FileStrategy
class DevuanHostname(Hostname):
    platform = 'Linux'
    distribution = 'Devuan'
    strategy_class = FileStrategy
class RaspbianHostname(Hostname):
    platform = 'Linux'
    distribution = 'Raspbian'
    strategy_class = FileStrategy
class GentooHostname(Hostname):