access discovery service via nginx

CMakeModules/prepare_asapo.cmake

config/nomad/nginx.nmd.in

config/nomad/payload.json

discovery/src/asapo_discovery/server/server_nottested.go

producer/api/src/receiver_discovery_service.cpp

producer/api/src/receiver_discovery_service.h

producer/api/src/request_handler_tcp.cpp

producer/api/unittests/test_receiver_discovery_service.cpp

tests/automatic/full_chain/simple_chain/check_linux.sh

tests/automatic/full_chain/simple_chain/check_windows.bat

...tomatic/producer_receiver/check_monitoring/check_linux.sh

...tic/producer_receiver/transfer_single_file/check_linux.sh

.../producer_receiver/transfer_single_file/check_windows.bat

tests/automatic/settings/nginx.conf.tpl

worker/api/cpp/src/server_data_broker.cpp

worker/api/cpp/src/server_data_broker.h