Review and make easier the removal of non base code

Microprofile functionality (microprofile modules and related test cases) and EE9 modules are not part of the base code.

At least for the Galleon layers implemented on testsuite/layers, we have identified that we are not handling this separation of concerns properly, which could make more difficult the conversion to product.

The task for this Jira is to make this separation more clear, identify any other place where this can occur, and facilitate the easy removal of what is not expected to be part of the base code.