raw_data fix

vm.py

@@ -93,7 +93,9 @@ class VMInstance:
             })
         # Building raw data into xml
         if self.raw_data:
-            xml_top.append(ET.fromstring(self.raw_data))
+            raw_data = ET.fromstring("<raw_data>" + self.raw_data + "</raw_data>")
+            for child in raw_data:
+                xml_top.append(child)
         # Basic virtual machine paramaters
         ET.SubElement(xml_top, 'name').text = self.name
         ET.SubElement(xml_top, 'vcpu').text = str(self.vcpu)