Update nflow-examples (#614) #587

Job	Run time
build-and-test-nflow-explorer-ng	5m 24s
javadoc-spotbugs-codeql	6m 0s
build-and-test (17)	1m 25s
build-and-test (20)	1m 49s
integration-tests (17, h2)	2m 43s
integration-tests (17, mariadb)	3m 3s
integration-tests (17, postgresql)	2m 44s
integration-tests (17, mysql)	3m 14s
integration-tests (17, sqlserver)	4m 19s
integration-tests (17, db2)	4m 20s
integration-tests (17, oracle)	4m 13s
integration-tests (20, h2)	2m 7s
integration-tests (20, mariadb)	3m 21s
integration-tests (20, postgresql)	3m 2s
integration-tests (20, mysql)	3m 48s
integration-tests (20, sqlserver)	5m 28s
integration-tests (20, db2)	4m 30s
integration-tests (20, oracle)	4m 1s
	1h 5m 31s

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