The manifest should be the requirement of a generated job instead of the generator's requirement (Thunderbolt)

For the Thunderbolt audio test generator, the manifest should be the requirement of its generated job, instead of the requirement of the generator.

Thing is, if you start checkbox on a freshly install system, if the generator job has the manifest requirement, it will be skipped before the test case selection section, because the manifest entry wasn't generated yet.

Work flow of the manifest collector:

1. Select whitelist
2. Job generation stage, it run through all generators
3. Job selection section
4. Test started, manifest will be collected here, ideally it will be collected before all other test cases.

As you can see here, things will go wrong on step 2 with manifest requirement for generators