Newer controller-gen doesn't correctly recognize markers. Need upgrade.

[haouc]

What would you like to be enhanced:
Looks like the controller is still using 0.6.x controller-tools to manage markers. Controller-gen has a breaking change from 0.7 and the latest version is 0.11.x. This project need to upgrade markers to use newer controller-tools.
Why is the change needed and what use case will it solve:
This project is still using an old controller-tool version. It should be upgraded to work with newer controller-tools version.

[sushrk]

Partly addressed in #369

go/v4 is the default version now, https://book.kubebuilder.io/plugins/go-v4-plugin

Keeping this issue open till be move to v4.