[FLINK-36892][Test] Use record processor in operator test harness #292

Job	Run time
Default (Java 11) / Compile	8m 43s
Pre-compile Checks / Basic QA	5m 55s
Default (Java 11) / Test packaging/licensing	33m 53s
Default (Java 11) / E2E (group 1)	1h 47m 49s
Default (Java 11) / Test (module: core)	11m 40s
Default (Java 11) / Test (module: python)	28m 40s
Default (Java 11) / E2E (group 2)	2h 2m 32s
Default (Java 11) / Test (module: table)	8m 2s
Default (Java 11) / Test (module: connect)	21m 21s
Default (Java 11) / Test (module: tests)	34m 56s
Default (Java 11) / Test (module: misc)	34m 25s
	6h 57m 56s

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