build

nvme: output copy command success message for json format #3046

Job	Run time
cross (s390x)	47s
default (gcc, release)	33s
default (gcc, debug)	25s
cross (armhf)	52s
muon minimal static	35s
default (clang, debug)	30s
cross (ppc64le)	49s
default (clang, release)	32s
make static	1m 33s
build libnvme and nvme-cli separately	40s
fallback shared libraries	0s
	7m 16s

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