service: Added service status option

[psaints]

Added the option to set the service to one of 'enabled', 'disabled', 'running' or 'unmanaged' values. The possible values and behaviour are taken from the elastic-elasticsearch module.

Pull request acceptance prerequisites:

• [x] Signed the CLA (if not already signed)
• [x] Rebased/up-to-date with base branch
• [x] Updated CHANGELOG.md with patch notes (if necessary)
• [ ] Any relevant docs (README.markdown or inline documentation) updated (if necessary)
• [ ] Updated CONTRIBUTORS (if you would like attribution)
• [x] Tests pass CI

[tylerjl]

Many thanks for the contribution @psaints, this all looks good to me!