testQemuHotplugCpuPrepare: Allow deprecated commands for non-modern cpu hotplug test

We have a few cases validating that the code behaves correctly in
pre-modern hotplug era. This is controled by the 'modern' flag for the
test. Since 'cpu-add' command is now deprecated in qemu, there is a
modern replacement for it, and the test output is checked against
expected commands we can skip schema validation for the legacy command.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

tests/qemuhotplugtest.c

@@ -457,6 +457,9 @@ testQemuHotplugCpuPrepare(const char *test,
     if (fail)
         qemuMonitorTestAllowUnusedCommands(data->mon);
 
+    if (!data->modern)
+        qemuMonitorTestSkipDeprecatedValidation(data->mon, true);
+
     priv->mon = qemuMonitorTestGetMonitor(data->mon);
     virObjectUnlock(priv->mon);