fix using non-positive ids

CHANGELOG.md

consumer/api/cpp/src/server_data_broker.cpp

consumer/api/cpp/unittests/test_server_broker.cpp

consumer/api/python/asapo_consumer.pyx.in

producer/api/cpp/src/producer_impl.cpp

producer/api/cpp/unittests/test_producer_impl.cpp

producer/api/python/asapo_producer.pxd

producer/api/python/asapo_producer.pyx.in

tests/automatic/producer/python_api/producer_api.py