[FLINK-34986][Runtime/State] More tests for reference counting of Con… #53

Job	Run time
Default (Java 8) / Compile	10m 19s
Pre-compile Checks / Basic QA	5m 9s
Default (Java 8) / Test packaging/licensing	31m 45s
Default (Java 8) / E2E (group 1)	1h 43m 0s
Default (Java 8) / Test (module: core)	36m 43s
Default (Java 8) / E2E (group 2)	2h 0m 7s
Default (Java 8) / Test (module: python)	30m 38s
Default (Java 8) / Test (module: table)	33m 55s
Default (Java 8) / Test (module: connect)	18m 35s
Default (Java 8) / Test (module: tests)	46m 4s
Default (Java 8) / Test (module: misc)	45m 37s
	8h 1m 52s

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