[E2E] QUARANTINE: multi-project_pipelines_spec.rb

What does this MR do?

Quarantines the following e2e tests:

1. Verify Multi-project pipelines creates a multi-project pipeline with artifact download | Testcase | Spec metrics | Failure issue

This MR was created based on data from reliable e2e test report: #472396 (closed)

Check-list

• General code guidelines check-list
  • Code review guidelines
  • Style guides
• Quarantine test check-list
  • Follow the Quarantining Tests guide.
  • Confirm the test has a quarantine: tag with the specified quarantine type.
  • Note if the test should be quarantined for a specific environment.
  • (Optionally) In case of an emergency (e.g. blocked deployments), consider adding labels to pick into auto-deploy (Pick into auto-deploy priority1 severity1).
• To ensure a faster turnaround, ask in the #quality_maintainers Slack channel for someone to review and merge the merge request, rather than assigning it directly.

(This MR was automatically generated by gitlab_quality-test_tooling at 2024-07-15 02:06:08 UTC)