Rename allow-query pytest glue file

To conform with the expected naming convention, the pytest glue file for
the `allow-query` test should use underscore as the word separator in
the python file name: allow-query/tests_sh_allow_query.py

bin/tests/system/allow-query/tests_sh_allow_query.py

@@ -0,0 +1,14 @@
+# 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.
+
+
+def test_allow_query(run_tests_sh):
+    run_tests_sh()