build

CI: improve nightly blktests #3286

Job	Run time
cross (armhf)	44s
default (clang, debug)	52s
cross (ppc64le)	44s
default (gcc, release)	51s
default (clang, release)	50s
default (gcc, debug)	48s
cross (s390x)	44s
muon minimal static	36s
make static	43s
build libnvme and nvme-cli separately	43s
fallback shared libraries	0s
	7m 35s

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