runtime: qemu: tdx: Support mrconfigid / mrowner/ mrownerconfig

This is a quick and simple pre-req for supporting initData, which will
take advantage of the mrconfigid in the TDX case.

While already adding mrconfigid, which is hardcoded empty right now,
let's do the same for mrowner and mrownerconfig, and leave it prepared
for future expansions.

Signed-off-by: Fabiano Fidêncio <fabiano@fidencio.org>

src/runtime/pkg/govmm/qemu/qemu.go

@@ -437,6 +437,9 @@ type SocketAddress struct {
 type TdxQomObject struct {
 	QomType               string        `json:"qom-type"`
 	Id                    string        `json:"id"`
+	MrConfigId            string        `json:"mrconfigid,omitempty"`
+	MrOwner               string        `json:"mrowner,omitempty"`
+	MrOwnerConfig         string        `json:"mrownerconfig,omitempty"`
 	QuoteGenerationSocket SocketAddress `json:"quote-generation-socket"`
 	Debug                 *bool         `json:"debug,omitempty"`
 }
@@ -465,7 +468,14 @@ func (this *TdxQomObject) String() string {
 
 func prepareTDXObject(object Object) string {
 	qgsSocket := SocketAddress{"vsock", fmt.Sprint(VsockHostCid), fmt.Sprint(object.QgsPort)}
-	tdxObject := TdxQomObject{string(object.Type), object.ID, qgsSocket, nil}
+	tdxObject := TdxQomObject{
+		string(object.Type), // qom-type
+		object.ID,           // id
+		"",                  // mrconfigid
+		"",                  // mrowner
+		"",                  // mrownerconfig
+		qgsSocket,           // quote-generation-socket
+		nil}
 
 	if object.Debug {
 		*tdxObject.Debug = true