Add ability to run E2E tests against gitlab foss

andreyrequested to merge
andrey-add-ce-assets-canonical into master

What does this MR do and why?

Add ability to run E2E tests in gitlab CE mode

Closes #398206 (closed)

MR acceptance checklist

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

Merge request reports