"TelemetryBackend" tests "test_get_kafka_configs()",...
"TelemetryBackend" tests "test_get_kafka_configs()", "test_get_kafka_configs_a()" and "test_export_collector_value()" are added.
"TelemetryBackend" tests "test_get_kafka_configs()", "test_get_kafka_configs_a()" and "test_export_collector_value()" are added.