Add multi-query support to label step #3792

Job	Run time
build-all	1m 41s
build-java11	1m 30s
tests (driver, 8)	1m 15s
tests (server, 8)	4m 37s
tests (test, 8)	8m 43s
tests (inmemory, -Dtest.skip.tp=false, 8)	35m 27s
tests (berkeleyje, 8)	10m 58s
tests (lucene, 8)	5m 44s
tests (driver, -Pjava-11, 11)	1m 15s
tests (server, -Pjava-11, 11)	3m 48s
tests (test, -Pjava-11, 11)	9m 16s
tests (inmemory, -Pjava-11, -Dtest.skip.tp=false, 11)	33m 43s
tests (berkeleyje, -Pjava-11, 11)	11m 22s
tests (lucene, -Pjava-11, 11)	5m 27s
	2h 14m 46s

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