Filling Code Coverage gaps in CPS-NCMP-Service

Filling Code Coverage gaps in CPS-NCMP-Service

- Removed unused variation of ProvMnS exception
- Cover error scenarios on Inventory Facade Impl
- Refactored LCM Event sending to always use (batch) of CmHandleTransitionPair
  (this meant I could avoid a different variations that was hard to test, and simply removed redundant duplicated code
- Add tested for simple data object no used in any current test
- Added some additional (typically negative) scenarios in existing test
- Change LCM Event related methods signatures to use term 'current' and 'target' and in that order consistently
- Refactored (simplified) Lcm Event Helper had a lot of unnecessary method splitting ending up in bad names like populateX & create
- Simplified arg[] handle and some other groovy improvement in related tests

Issue-ID:CPS-475

Change-Id: Ifd1ec6246a316098dec62a8f6737f90cfda36de5
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>