RATIS-2209. Exercise make_rc.sh in CI (#1244) #64

Job	Run time
CI / build / build	1m 19s
CI / basic (checkstyle) / checkstyle	25s
CI / release / release	5m 25s
CI / basic (author) / author	13s
CI / basic (findbugs) / findbugs	1m 45s
CI / basic (rat) / rat	15s
CI / unit (flaky) / unit (flaky)	8m 57s
CI / unit (grpc) / unit (grpc)	9m 45s
CI / unit (misc) / unit (misc)	6m 20s
CI / unit (server) / unit (server)	13m 26s
CI / repro / repro	1m 25s
CI / compile (17) / compile (17)	1m 11s
CI / compile (11) / compile (11)	1m 5s
CI / compile (21) / compile (21)	1m 6s
CI / coverage	0s
	52m 37s

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