Improved code coverage for NetworkCmProxyDataServiceImpl

- Production code had catch block that is no longer needed
- Cleaned up some test somewhat (close to the new tests)

Issue-ID: CPS-475
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>
Change-Id: Iaa409e752a496bf088a58ccd422fe3d850442b59
3 files changed