increase the default probe to 60s #125

Job	Run time
osx clang --disable-ssl	45s
dpdk gcc	2m 2s
linux deb no dpdk	4m 9s
linux gcc --disable-ssl	1m 31s
linux clang --disable-ssl	1m 21s
linux gcc c99	1m 15s
linux clang c99	1m 21s
linux gcc test	1m 44s
linux clang test asan	2m 33s
linux clang test ubsan	1m 54s
linux gcc test --enable-shared	1m 49s
linux clang test --enable-shared	2m 15s
linux gcc test dpdk	1m 39s
linux clang test dpdk	1m 45s
linux gcc test -ljemalloc	1m 26s
linux clang test -ljemalloc	1m 37s
linux gcc --enable-afxdp	1m 13s
linux clang --enable-afxdp	1m 35s
linux gcc dpdk --enable-shared	1m 49s
linux clang dpdk --enable-shared	1m 48s
linux gcc dpdk-shared	1m 6s
linux clang dpdk-shared	1m 15s
linux gcc dpdk-shared --enable-shared	1m 28s
linux clang dpdk-shared --enable-shared	1m 24s
linux gcc m32 --disable-ssl	1m 18s
	42m 2s

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