update circleci to latest orb, add yamllint and mdl

[JohnRoesler]

Description

• updates circleci orb to latest
• adds yaml and markdown lint and addresses linting issues
• updates OS versions in .kitchen files

Issues Resolved

[List any existing issues this PR resolves]

Check List

• [ ] All tests pass. See TESTING.md for details
• [ ] New functionality includes testing.
• [ ] New functionality has been documented in the README if applicable

[damacus]

Deliverrry :(

[damacus]

Any chance you can take a look at the rspec tests?