Fetch the correlation-id from context, that was either previously set in the current call-stack by using the NewContextWithCorrelationId function, or set by the client before making gPRC call.

For server-side MOC agent to pick the correlation-id which is previously set by gRPC client by using the NewContextWithCorrelationId function.

Replace the context by using this method before making gRPC calls to MOC cloud/node agent, the specified correlation-id will also be passed to server.