refactor: remove the use of knownResourceVersions (#2985) #5742

Job	Run time
sample_operators_tests (sample-operators/leader-election)	4m 40s
sample_operators_tests (sample-operators/mysql-schema)	3m 14s
sample_operators_tests (sample-operators/webpage)	3m 52s
sample_operators_tests (sample-operators/tomcat-operator)	3m 48s
	15m 34s

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