Move integration test (DataService)

- Moved all Data Intergation Test
- Added/improved some module Moudle Servcie test too
- Removed some unused (impossible) code-paths in prod code
- Replaced null's with meaningful strings (in edge case scenarios)
- Replaced @Shared with static (shorter) in some test

Issue-ID: CPS-1687
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>
Change-Id: Ib4b1ec1706ace7e3f5ac03d85177a6f7d4f6b8d0
8 files changed