test/device_information_service_server: update tests
test/gatt-service: test wrong transaction mode for battery_service_server
test/gatt-service: add test to device_information_service_server
test: fix build
test: use pkg-config for cpputest build flags
test/gatt_service_server: remove mics server test
fix more tests
gatt_service_server: update HEART_RATE_SERVER(read_callback_test)
test/gatt_service_server: read callback test
test/gatt_service_server: unify test file names