Fix flaky Jenkins end-to-end test spec

What does this MR do?

Fixes flaky Jenkins end-to-end test spec by waiting for a successful job in Jenkins before proceeding to check the job in GitLab.

Closes #195179 (closed)

Conformity

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