libvirt/constants.go: Add arch info to machine-driver-libvirt binary

machine-driver-libvirt now have arm64 and amd64 binary for linux platfrom. This PR
will make sure correct binary is downloaded and used for specific
platform.

pkg/crc/machine/libvirt/constants.go

@@ -5,6 +5,7 @@ package libvirt
 
 import (
 	"fmt"
+	"runtime"
 
 	"github.com/crc-org/crc/v2/pkg/crc/constants"
 )
@@ -20,11 +21,11 @@ const (
 )
 
 const (
-	machineDriverCommand = "crc-driver-libvirt"
 	MachineDriverVersion = "0.13.8"
 )
 
 var (
+	machineDriverCommand     = fmt.Sprintf("crc-driver-libvirt-%s", runtime.GOARCH)
 	MachineDriverDownloadURL = fmt.Sprintf("https://github.com/crc-org/machine-driver-libvirt/releases/download/%s/%s", MachineDriverVersion, machineDriverCommand)
 )