test: reproducer for #3445 #7354

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	3m 39s
sample_operators_tests (sample-operators/leader-election)	4m 22s
sample_operators_tests (sample-operators/tomcat-operator)	3m 52s
sample_operators_tests (sample-operators/webpage)	3m 54s
sample_operators_tests (sample-operators/operations)	9m 11s
	24m 58s

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