🐎 Allow qemu to use all available CPUs

Speed up the boot tests by allowing qemu to use all of the available
CPUs on the system. Our CI VMs have at least 2 CPUs and this shortens
the time required for a boot test.

Signed-off-by: Major Hayden <major@redhat.com>

cmd/osbuild-image-tests/context-managers.go

@@ -10,6 +10,8 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"runtime"
+	"strconv"
 	"time"
 )
 
@@ -128,6 +130,8 @@ func withBootedQemuImage(image string, ns netNS, f func() error) error {
 
 		qemuX8664Cmd := ns.NamespacedCommand(
 			"qemu-system-x86_64",
+			"-cpu", "host",
+			"-smp", strconv.Itoa(runtime.NumCPU()),
 			"-m", "1024",
 			"-snapshot",
 			"-accel", "accel=kvm:hvf:tcg",