- This will let us check that we have all the environment variables set more easily with `printenv | grep "CONSUL_K8S"`

- this makes it consistent with the other images
- allows scripting to work similarly to other images

- handle replace case where consul-enterprise is in the values.yaml file and charts.yaml file
- handle adding pre-release tag in changelog
- handle updating consul-dataplane

Co-authored-by: Dan Stough <dan.stough@hashicorp.com>