Move cloud metadata packages and kubernetes resources marshaling to internal

Decouples cloud provider metadata packages from kubernetes related code

Signed-off-by: Malte Poll <mp@edgeless.systems>

internal/cloud/qemu/logger.go

@@ -0,0 +1,38 @@
+package qemu
+
+import (
+	"context"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+// Logger is a Cloud Logger for QEMU.
+type Logger struct{}
+
+// NewLogger creates a new Cloud Logger for QEMU.
+func NewLogger() *Logger {
+	return &Logger{}
+}
+
+// Disclose writes log information to QEMU's cloud log.
+// This is done by sending a POST request to the QEMU's metadata endpoint.
+func (l *Logger) Disclose(msg string) {
+	url := &url.URL{
+		Scheme: "http",
+		Host:   qemuMetadataEndpoint,
+		Path:   "/log",
+	}
+
+	req, _ := http.NewRequestWithContext(context.Background(), http.MethodPost, url.String(), strings.NewReader(msg))
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := http.DefaultClient.Do(req)
+	if err == nil {
+		defer resp.Body.Close()
+	}
+}
+
+// Close is a no-op.
+func (l *Logger) Close() error {
+	return nil
+}