Fix the response code during CM-Handle Add , Update and Delete Scenario

We have the request URI with a common payload to handle the create , update and remove of CM-handle.

POST : ${CPS_HOST}:${CPS_PORT}/ncmpInventory/v1/ch

Review the response codes for the CM Handle Registration Scenario.

It returns 201 CREATED on successful excecution of the request for all the scenarios , we intend to review the response codes and chosse to send 204 OK, No Content.

Also check with stakeholders as when we change the response code it would be a backward incompatible change.

Also do check for scenario when we try to update the CM-Handle which does not exist , it throws 500 INTERNAL_SERVER_ERROR now , ideally it should be 4XX (discuss with team).