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

…-tests

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

Fixes geerlingguy#230: Convert instances of ansible_ssh_user to ansib…

…le_user.

Fixes geerlingguy#140: Show mapping of examples to book chapters in R…

…EADME.

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

Fixes geerlingguy#169: Update copy to remote_src usage in unarchive e…

…xample.

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

Update the DigitalOcean dynamic inventory script from Ansible upstream.

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

Fixes geerlingguy#40: Drupal example needs unzip.

Wrap variable for 2.x variable style.