Rewrite the hooks system test to pytest

Also, enable the test under TSAN.

bin/tests/system/hooks/tests_async_plugin.py

@@ -0,0 +1,26 @@
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0.  If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+import pytest
+
+pytest.importorskip("dns")
+import dns.message
+import dns.query
+import dns.rcode
+
+
+def test_async_hook(named_port):
+    msg = dns.message.make_query(
+        "example.com.",
+        "A",
+    )
+    ans = dns.query.udp(msg, "10.53.0.1", timeout=10, port=named_port)
+    assert ans.rcode() == dns.rcode.NOTIMP