Use prereq.sh for qmin, cookie system tests

(cherry picked from commit 78981cee77)

bin/tests/system/Makefile.am

@@ -110,6 +110,7 @@ TESTS +=			\
 	checkds			\
 	checknames		\
 	checkzone		\
+	cookie			\
 	database		\
 	dialup			\
 	dispatch		\
@@ -159,6 +160,7 @@ TESTS +=			\
 	padding			\
 	pending			\
 	pipelined		\
+	qmin			\
 	reclimit		\
 	redirect		\
 	resolver		\
@@ -201,7 +203,6 @@ TESTS +=			\
 	zonechecks
 
 if HAVE_PYMOD_DNS
-TESTS += qmin cookie
 if HAVE_PERLMOD_NET_DNS
 TESTS += digdelv dnssec forward
 if HAVE_PERLMOD_NET_DNS_NAMESERVER

bin/tests/system/cookie/.gitignore

@@ -1 +0,0 @@
-prereq.sh

bin/tests/system/cookie/prereq.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# 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.
+
+. ../conf.sh
+
+if ! ${PYTHON} -c 'import dns'
+then
+	echo_i "python dns module is required"
+	exit 1
+fi
+
+exit 0

bin/tests/system/qmin/prereq.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# 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.
+
+. ../conf.sh
+
+if ! ${PYTHON} -c 'import dns'
+then
+	echo_i "python dns module is required"
+	exit 1
+fi
+
+exit 0