RATIS-2482. Bump maven-bundle-plugin to 6.0.2 (#1413) #685

Job	Run time
CI / release / release	5m 32s
CI / unit (flaky) / unit (flaky)	4m 8s
CI / unit (grpc) / unit (grpc)	19m 4s
CI / build / build	1m 47s
CI / unit (server) / unit (server)	19m 7s
CI / basic (checkstyle) / checkstyle	27s
CI / basic (author) / author	12s
CI / basic (findbugs) / findbugs	2m 29s
CI / unit (misc) / unit (misc)	13m 28s
CI / basic (rat) / rat	17s
CI / repro / repro	1m 37s
CI / compile (17) / compile (17)	1m 0s
CI / compile (8) / compile (8)	55s
CI / compile (21) / compile (21)	1m 9s
CI / compile (11) / compile (11)	58s
CI / coverage	3m 25s
	1h 15m 35s

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