Merge pull request #471 from hippogriffin/470-k8s-1.19

470 - Update k8s to 1.23

Issue #429: Stop testing Rails deployment example test in chapter 10 …

…for now.

Merge pull request #309 from geerlingguy/221-orchestration-tests

Issue #221: Add tests for current multi-server ad-hoc orchestration examples.

Fixes #230: Convert instances of ansible_ssh_user to ansible_user.

Fixes #140: Show mapping of examples to book chapters in README.

Don't verify host keys on multi server orchestration example.

Fixes #169: Update copy to remote_src usage in unarchive example.

Fixes #106: Use https for Remi's repo in Node.js example.

Update the DigitalOcean dynamic inventory script from Ansible upstream.

Fixes #58: Add README and Vagrantfile to nodejs-role example.