parallels: add controllers in prlsdkLoadDomain

Call virDomainDefAddImplicitControllers to add disk
controllers, so virDomainDef, filled by this function
will look exactly like the one returned by virDomainDefParseString.

Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>

src/parallels/parallels_sdk.c

@@ -1265,6 +1265,9 @@ prlsdkLoadDomain(parallelsConnPtr privconn,
             *s = '\0';
     }
 
+    if (virDomainDefAddImplicitControllers(def) < 0)
+        goto error;
+
     if (olddom) {
         /* assign new virDomainDef without any checks */
         /* we can't use virDomainObjAssignDef, because it checks