[containernetworking sample plugin](https://github.com/containernetworking/plugins/tree/main/plugins/sample)

The details for the deployment & installation of this plugin were pretty much lifted directly from the
[Calico CNI plugin](https://github.com/projectcalico/cni-plugin).

Specifically:

Advanced users may occasionally have the need to customize parameters (like container command line flags) which are not
exposed through either of the installation or configuration APIs described in this document. For such cases, it's
possible to overlay the generated K8s resources before they are applied with user-defined overlays. For example, to