Add a version sanity check QA smoke test

What does this MR do?

Adds a QA :smoke test to ensure that the version running matches a RELEASE environment variable, when provided.

The environment variable is passed to the release and pre QA pipelines as of https://ops.gitlab.net/gitlab-com/gl-infra/deployer/-/merge_requests/311.

See gitlab-com/gl-infra/delivery#1179 (closed).

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Considerations

• Should we change the QA metadata tags to something other than just :smoke?
• Should the test be located somewhere other than sanity?
• Is the SemVer-based checking too hacky?