improve: possibility to provide id for external resource #5810

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	3m 6s
sample_operators_tests (sample-operators/tomcat-operator)	3m 2s
sample_operators_tests (sample-operators/leader-election)	3m 35s
sample_operators_tests (sample-operators/webpage)	3m 23s
	13m 6s

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