Updating unit tests lacking a platform and version for their chefspec runner

[cwjohnston]

Description

Updating unit tests where ChefSpec runner objects lacked a platform and version.

Motivation and Context

Appears upstream change in erlang cookbook now expects node['lsb'] attributes to be set, breaking our unit test chef runs. This change fixes the build.

How Has This Been Tested?

Running unit tests ✅

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

  Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.