RuntimeClass is an alpha feature for supporting multiple container runtimes within a cluster. When
enabled, pods can select a RuntimeClass to run with using the PodSpec.RuntimeClassName field.
To enable RuntimeClass, set the feature gate RuntimeClass=true, and ensure the CRD defined in this
directory is installed.
For more information, see: https://github.com/kubernetes/community/blob/master/keps/sig-node/0014-runtime-class.md