treewide: migrate to qemu-kvm in toolchain-bundle

Change-Id: I42a10a9adf7bdccb83ef997c6d554140ffaade4b
Reviewed-on: https://review.monogon.dev/c/monogon/+/4052
Reviewed-by: Jan Schär <jan@monogon.tech>
Tested-by: Jenkins CI
diff --git a/cloud/agent/e2e/BUILD.bazel b/cloud/agent/e2e/BUILD.bazel
index 91f09ce..ce068f8 100644
--- a/cloud/agent/e2e/BUILD.bazel
+++ b/cloud/agent/e2e/BUILD.bazel
@@ -4,6 +4,7 @@
     name = "e2e_test",
     srcs = ["main_test.go"],
     data = [
+        "//build/toolchain/toolchain-bundle:qemu-kvm",
         "//cloud/agent/takeover:initramfs",
         "//metropolis/installer/test/testos:testos_image",
         "//third_party/edk2:OVMF_CODE.fd",
@@ -16,6 +17,7 @@
         "xOvmfCodePath": "$(rlocationpath //third_party/edk2:OVMF_CODE.fd )",
         "xKernelPath": "$(rlocationpath //third_party/linux )",
         "xInitramfsOrigPath": "$(rlocationpath //cloud/agent/takeover:initramfs )",
+        "xQEMUPath": "$(rlocationpath //build/toolchain/toolchain-bundle:qemu-kvm )",
     },
     deps = [
         "//cloud/agent/api",
diff --git a/cloud/agent/e2e/main_test.go b/cloud/agent/e2e/main_test.go
index dc3108e..53b719b 100644
--- a/cloud/agent/e2e/main_test.go
+++ b/cloud/agent/e2e/main_test.go
@@ -47,13 +47,14 @@
 	xOvmfCodePath      string
 	xKernelPath        string
 	xInitramfsOrigPath string
+	xQEMUPath          string
 )
 
 func init() {
 	var err error
 	for _, path := range []*string{
 		&xImagePath, &xOvmfVarsPath, &xOvmfCodePath,
-		&xKernelPath, &xInitramfsOrigPath,
+		&xKernelPath, &xInitramfsOrigPath, &xQEMUPath,
 	} {
 		*path, err = runfiles.Rlocation(*path)
 		if err != nil {
@@ -277,11 +278,12 @@
 		"-kernel", xKernelPath,
 		"-initrd", initramfsFile.Name(),
 		"-append", "console=ttyS0 quiet")
-	qemuCmdAgent := exec.Command("qemu-system-x86_64", stage1Args...)
+	qemuCmdAgent := exec.Command(xQEMUPath, stage1Args...)
 	qemuCmdAgent.Stdout = os.Stdout
 	qemuCmdAgent.Stderr = os.Stderr
 	qemuCmdAgent.Run()
-	qemuCmdLaunch := exec.Command("qemu-system-x86_64", qemuArgs...)
+
+	qemuCmdLaunch := exec.Command(xQEMUPath, qemuArgs...)
 	stdoutPipe, err := qemuCmdLaunch.StdoutPipe()
 	if err != nil {
 		t.Fatal(err)