fix memleaks, python tests

consumer/api/c/include/asapo/consumer_c.h

consumer/api/python/asapo_consumer.pyx.in

producer/api/cpp/unittests/test_request_handler_tcp.cpp

producer/api/python/asapo_producer.pyx.in

...ror-sending-data-using-callback-method/bugfix_callback.py

tests/automatic/producer/aai/producer_aai.py

tests/automatic/producer/python_api/producer_api.py

tests/automatic/settings/broker_settings.json