E2E: attach gitlab version and revision to allure report

What does this MR do and why?

Describe in detail what your merge request does and why.

Instead of relying on environment variables which in most cases are not present in the pipeline running, fetch version and revision from application under test and attach to allure report.

Limit fetching only to environments with either admin or user token present.

Screenshots or screen recordings

These are strongly recommended to assist reviewers and reduce the time to merge your change.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Closes: https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/949