improve: move compare resource version methods to internal utils #6173

Job	Run time
sample_operators_tests (sample-operators/webpage)	3m 6s
sample_operators_tests (sample-operators/tomcat-operator)	2m 46s
sample_operators_tests (sample-operators/leader-election)	3m 21s
sample_operators_tests (sample-operators/mysql-schema)	2m 36s
	11m 49s

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