Override base render_config to render the service file.
This is because smartctl_exporter doesn't support providing config file.
The config options need to be provided as flags while exectuting
smartctl_exporter. So, the service file must be re-rendered when a config
value is changed.
Override base render_config to render the service file.
This is because smartctl_exporter doesn't support providing config file. The config options need to be provided as flags while exectuting smartctl_exporter. So, the service file must be re-rendered when a config value is changed.
Closes: #255