issue/1338: implemented prototype of early dynamic test discovery in …

[mibutec]

…execution phase

Overview

When starting execution phase for dynamic tests all dynamic tests are discovered and dynamically registered as first action.

TODO: For now when there are more tests than just one @testFactoy method, tests are discovered when execution for this @testfactory method starts

---

I hereby agree to the terms of the JUnit Contributor License Agreement.

---

Definition of Done

• There are no TODOs left in the code
• Method preconditions are checked and documented in the method's Javadoc
• Coding conventions (e.g. for logging) have been followed
• Change is covered by automated tests
• Public API has Javadoc and @API annotations
• Change is documented in the User Guide and Release Notes
• All continuous integration builds pass

[marcphilipp]

See feedback in #1338 (comment)

[sbrannen]

Closing this PR. See #1338 (comment) for details.