Test case for `merge_exclude_columns` #12594

Job	Run time
integration test metadata generation	1s
Test Log Schema (1)	4m 38s
Test Log Schema (2)	3m 47s
Test Log Schema (3)	4m 5s
Test Log Schema (4)	5m 1s
Test Log Schema (5)	5m 17s
Log Schema Test Suite	1s
	22m 50s

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