Cleanup-royal

A lot of complexity has been removed from this role in order to make the role more readable and maintainable.

• ara integration is removed, I was not using it.
• goss integration has been removed, it's difficult to describe tests for multiple platforms and added test-time.
• {{ role_name }}_ignore_docker has been removed, it introduces more issues than it solves.
• {{ role_name }}_package_state has been removed, I've never used it.
• README.md has been updated with a new template.
• Molecule now uses prepare.yml, saving a bit of time on idempotency tests.

A major release bump, because two variable have been removed, {{ role_name }}_ignore_docker and {{ role_name }}_package_state.