meson: convert tests/qtest to meson

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/tests/qtest/dbus-vmstate-test.c b/tests/qtest/dbus-vmstate-test.c
index 2e5e47d..aca9b98 100644
--- a/tests/qtest/dbus-vmstate-test.c
+++ b/tests/qtest/dbus-vmstate-test.c
@@ -1,7 +1,7 @@
 #include "qemu/osdep.h"
 #include <glib/gstdio.h>
 #include <gio/gio.h>
-#include "libqtest.h"
+#include "libqos/libqtest.h"
 #include "qemu-common.h"
 #include "dbus-vmstate1.h"
 #include "migration-helpers.h"