correct behaviour in case of broker restart

config/nomad/broker.nmd.in

tests/automatic/CMakeLists.txt

tests/automatic/broker/CMakeLists.txt

tests/automatic/high_avail/CMakeLists.txt

.../automatic/high_avail/broker_mongo_restart/CMakeLists.txt

.../automatic/high_avail/broker_mongo_restart/check_linux.sh

...utomatic/high_avail/receiver_mongo_restart/CMakeLists.txt

...utomatic/high_avail/receiver_mongo_restart/check_linux.sh

tests/automatic/high_avail/services_restart/CMakeLists.txt

tests/automatic/high_avail/services_restart/check_linux.sh

tests/automatic/producer_receiver/CMakeLists.txt

worker/api/cpp/src/server_data_broker.cpp

worker/api/cpp/unittests/test_server_broker.cpp