Make it possible to connect to our cluster at a specific URL and connect with Dolittle Azure AD credentials to be able to more easily govern access to the cluster

[einari]

child of #71

https://www.danielstechblog.io/azure-kubernetes-service-and-azure-active-directory-integration/

https://docs.microsoft.com/en-us/azure/aks/aad-integration

We want to have a fixed URL for working with Kubernetes without having to use reverse proxy and we want to protect this using our Azure AD credentials.

Investigate how we can get this to work with the kubectl CLI tool as well. What is required for it to be able to connect.

The purpose is to be able to control access for our staff in one place; Azure AD.

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