Improve customizability of SSABasedGenericKubernetesResourceMacher #5033

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	3m 11s
sample_operators_tests (sample-operators/tomcat-operator)	2m 27s
sample_operators_tests (sample-operators/webpage)	2m 47s
sample_operators_tests (sample-operators/leader-election)	3m 12s
	11m 37s

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