Adding the `-cpu host` option to the `addArchOptions` function for
darwin removes the warning message, "host doesn't support requested
feature: CPUID.80000001H:ECX.svm [bit 2]" by qemu-system-x86_64 when
using the `podman machine start` command on MacOS
Closes#11421
[NO TESTS NEEDED]
Signed-off-by: Scott Schreckengaust <scottschreckengaust@users.noreply.github.com>