add test for test-logging-tx-observer #479

Job	Run time
dci-lint / DCI-Lint	28s
unit-tests / Unit Tests (18.x)	36s
unit-tests / Unit Tests (20.x)	31s
integration-tests / Check for changes	2s
coverage / Coverage Reports (caliper-core)	6s
coverage / Coverage Reports (caliper-fabric)	10s
coverage / Coverage Reports (generator-caliper)	5s
integration-tests / Integration Tests (fabric, 18.x)	13m 13s
integration-tests / Integration Tests (fabric, 20.x)	13m 13s
integration-tests / Integration Tests (ethereum, 18.x)	4m 14s
integration-tests / Integration Tests (ethereum, 20.x)	4m 21s
integration-tests / Integration Tests (besu, 18.x)	3h 7m 3s
integration-tests / Integration Tests (besu, 20.x)	3h 7m 3s
integration-tests / Integration Tests (generator, 18.x)	5m 9s
integration-tests / Integration Tests (generator, 20.x)	5m 20s
	7h 1m 34s

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