GitLab Chart works towards Kubernetes 1.22

What this post added

This post details the update of the GitLab Chart and Operator to support Kubernetes 1.22. This involves updating the NGINX Ingress Controller to version 1.0.4, which necessitates dropping support for Kubernetes versions prior to 1.19. Users still requiring support for older versions can deploy up to Chart version 5.5.x. The post explains the technical reasons for this change, referencing the deprecation of the `networking.k8s.io/v1beta1` API and the use of a forked ingress-nginx Chart based on version 4.0.6. It also outlines the impact on users and potential DNS record changes.