Resolve "PND related operations via NBI are located in CoreServer"

api/go/gosdn/core/core.pb.go

api/go/gosdn/core/core_grpc.pb.go

api/go/gosdn/pnd/pnd.pb.go

api/go/gosdn/pnd/pnd.pb.gw.go

api/go/gosdn/pnd/pnd_grpc.pb.go

api/openapiv2/gosdn_northbound.swagger.json

api/proto/buf.lock

api/proto/gosdn/core/core.proto

api/proto/gosdn/pnd/pnd.proto

applications/venv-manager/venv-manager/venv-manager.go

cli/adapter/PndAdapter.go

cli/cmd/pndCreate.go

controller/api/grpc.go

controller/api/initialise_test.go

controller/api/pnd.go

controller/controller.go

controller/http.go

controller/northbound/client/core.go

controller/northbound/server/core.go

controller/northbound/server/core_test.go