ci: Use proper uname argument to get the HW type #3426

Job	Run time
dpdk gcc	4m 8s
osx clang --disable-ssl	6m 28s
linux rpm fedora	10m 7s
linux gcc --disable-ssl	3m 14s
linux clang --disable-ssl	2m 52s
linux gcc test -300	13m 46s
linux gcc test 301-600	9m 14s
linux gcc test 601-	6m 11s
linux clang test sanitizers -300	22m 19s
linux clang test sanitizers 301-600	11m 35s
linux clang test sanitizers 601-	8m 28s
linux gcc test -ljemalloc -300	13m 3s
linux gcc test -ljemalloc 301-600	9m 30s
linux gcc test -ljemalloc 601-	6m 11s
linux gcc system-test-dpdk dpdk -100	14m 24s
linux gcc system-test-dpdk dpdk 101-	13m 11s
linux gcc system-test-userspace -100	13m 54s
linux gcc system-test-userspace 101-	11m 42s
linux gcc system-test -100	15m 40s
linux gcc system-test 101-	13m 41s
linux clang system-test sanitizers -100	18m 33s
linux clang system-test sanitizers 101-	17m 4s
linux x86 gcc --disable-ssl	2m 37s
	4h 7m 52s

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