Implement merging all ncmp datastore endpoints into one

- Merging all endpoints
under /v1/ch/{cm-handle}/data/ds/ncmp-datastore:*
to /v1/ch/{cm-handle}/data/ds/{ncmp-datastore-name}

- Implementing missing tests from parent
- Introducing abstract class to keep the common code and just pass in
  the supplier to be executed in sync or async manner
- Removed the existing get endpoints for passthrough-running,
  passthrough-operational and operational and merged them into a common
  get endpoint

Issue-ID: CPS-1178
Issue-ID: CPS-1001
Change-Id: I6956c81d5acfa8fb11217bcc16cb795b62070fa3
Signed-off-by: bmiklos <miklos.baranyak@est.tech>
23 files changed