Config hot-reload

[kuskoman]

Feature Description

The application could take an optional flag as an argument and allow user to dynamically change configuration file while the application is running.

Version of logstash-exporter this feature request applies to

v2

Motivation and Goals

This would be especially useful if the application is going to be used as Kubernetes controller.

Additional Context

Example article on the topic: https://itnext.io/clean-and-simple-hot-reloading-on-uninterrupted-go-applications-5974230ab4c5