Patch # 3: Data operation response event (NCMP → Client App) to comply with CloudEvents

- Modified data operation record strategy to consume cloud event.
- Modified NCMP data operation event consumer to read cloud event
  header. (prefixed with ce_)
- Modified event publisher to support legacy and cloud event based on
  event type (if legacy event use legacy kafka template else cloud kafka
  template).
- Introduced a new method onto json object mapper to convert json object
  to bytes.
- Modified data operation consumer spec to produce a cloud event and validate it.
- Added Kafka Integration Test (for filtering)

Issue-ID: CPS-1724

Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
Change-Id: Ide701b1ff952f57413cb4e4aa0d55c08753f0298
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>