Add K8s version parameter to kind cluster creation

[busma13]

• This PR allows for the setting of a K8S_VERSION env variable when running yarn test:k8s or yarn k8s (#3482)
• The env variable is converted to a command option which is used by the Kind class to create a kind cluster using that k8s version.
• A map of kind versions to available images lives in the Kind class and will need to be updated with new kind versions.
• K8s images are limited to one minor version per kind version, with the patch level equal to the latest version at release time. For example:
  • kind v0.20.0 --> kindest/node:v1.26.6
  • kind v0.19.0 --> kindest/node:v1.26.4
  • kind v0.19.0 --> kindest/node:v1.26.3
• Create Kind class
• add clusterName option to k8s

[godber]

I want to merge this, please bump the version and let me know after you do and I will merge it.