Upgrade k8s.io/* to v0.24, sigs.k8s.io/controller-runtime to v0.12.1+

[rfranzke]

How to categorize this issue?

What would you like to be added:

We should upgrade to the latest versions of our go upstream dependencies:

• sigs.k8s.io/controller-runtime@v0.12.1: https://github.com/kubernetes-sigs/controller-runtime/releases/tag/v0.12.1
• k8s.io/*@v0.24.0

Important changes / Action items

Here is a list of a few upstream changes to look out for when vendoring g/g, k/* and c-r in any of our repos (e.g. extensions). Please consider the release notes of controller-runtime@v0.12 and upwards as well for a more complete list and more details.

⚠️ breaking / most notable changes

• leases is now the default leader election lock type (ref ⚠ leaderelection: use 'leases' as default resource lock object kubernetes-sigs/controller-runtime#1773)
• AddFinalizer and RemoveFinalizer now return a bool (ref ✨return a bool from AddFinalizer and RemoveFinalizer kubernetes-sigs/controller-runtime#1636)
• Add base context to manager.Options for Runnables (ref ✨ [WIP] Add BaseContext to manager Options for use with Runnables kubernetes-sigs/controller-runtime#1846) (previously, a new context.Background() was created so the Runnables aren't canceled when a top-level context is)
• Update k8s.io/* dependencies to v0.24.0
• Deprecated types in k8s.io/apimachinery/util/clock. Please use k8s.io/utils/clock instead. (ref Deprecate types in k8s.io/apimachinery/util/clock kubernetes/kubernetes#106850) -> Drop usages of k8s.io/apimachinery/pkg/util/clock #6030

ℹ️ other changes / good to know / for information only:

• Add Kubernetes Gomega extension (Komega) to make testing controllers easier (ref ✨ Add Kubernetes Gomega extension with to make testing controllers easier kubernetes-sigs/controller-runtime#1767)

[ary1992]

/assign

[rfranzke]

/unassign @ary1992
/assign @rfranzke

[rfranzke]

/unassign
I won't make it this week, unfortunately.