test(service): add helper state to run service in containers

[myii]

PR progress checklist (to be filled in by reviewers)

• [ ] Changes to documentation are appropriate (or tick if not required)
• [ ] Changes to tests are appropriate (or tick if not required)
• [ ] Reviews completed

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What type of PR is this?

Primary type

• [ ] [build] Changes related to the build system
• [ ] [chore] Changes to the build process or auxiliary tools and libraries such as documentation generation
• [x] [ci] Changes to the continuous integration configuration
• [ ] [feat] A new feature
• [ ] [fix] A bug fix
• [ ] [perf] A code change that improves performance
• [ ] [refactor] A code change that neither fixes a bug nor adds a feature
• [x] [revert] A change used to revert a previous commit
• [ ] [style] Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.)

Secondary type

• [ ] [docs] Documentation changes
• [x] [test] Adding missing or correcting existing tests

Does this PR introduce a BREAKING CHANGE?

No.

Related issues and/or pull requests

• Semi-automated by https://github.com/myii/ssf-formula/pull/333

Describe the changes you're proposing

Some distros do not start the service if virtualization is detected, so we force the service to start to test the formula.

Includes a revert for commit 8711b24bb87db443594c1f9bb30da62d7fa4dc37, which is no longer required as a workaround for Kitchen testing due to improved method.

Pillar / config required to test the proposed changes

Debug log showing how the proposed changes work

Documentation checklist

• [ ] Updated the README (e.g. Available states).
• [ ] Updated pillar.example.

Testing checklist

• [x] Included in Kitchen (i.e. under state_top).
• [x] Covered by new/existing tests (e.g. InSpec, Serverspec, etc.).
• [ ] Updated the relevant test pillar.

Additional context

[myii]

Self-merge, essentially the same fix as https://github.com/saltstack-formulas/rng-tools-formula/pull/5.

[saltstack-formulas-travis]

:tada: This PR is included in version 0.20.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: