Update Verify QA tests to use Login Flow

What does this MR do?

This MR updates the Verify QA tests to use the Login Flow, and by doing so it makes the code a bit shorter.

Does this MR meet the acceptance criteria?

Conformity

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