feat: Add logging field variant versions

Matias Alvarezrequested to merge
malvarez-test-logging-field-variant into master

Description

This MR was used to test the concept being developed in the scope of gitlab-org/gitlab#596493 (closed).

Now that gitlab-org/quality/tooling/labkit-spec!14 (merged) is merged, we can apply the changes.

Related Issues

Edited by Matias Alvarez

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