Add tests for mkeys with unsupported algorithm

These tests check if a key with an unsupported algorithm in
managed-keys is ignored and when seeing an algorithm rollover to
an unsupported algorithm, the new key will be ignored too.

bin/tests/system/mkeys/ns6/setup.sh

@@ -0,0 +1,30 @@
+#!/bin/sh -e
+#
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# 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 http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+SYSTEMTESTTOP=../..
+. $SYSTEMTESTTOP/conf.sh
+
+zone=.
+zonefile=root.db
+
+# an RSA key
+rsakey=`$KEYGEN -a rsasha256 -qfk rsasha256.`
+
+# a key with unsupported algorithm
+unsupportedkey=Kunknown.+255+00000
+cp unsupported-managed.key "${unsupportedkey}.key"
+
+# root key
+rootkey=`cat ../ns1/managed.key`
+cp "../ns1/${rootkey}.key" .
+
+# Configure the resolving server with a managed trusted key.
+keyfile_to_managed_keys $unsupportedkey $rsakey $rootkey > managed.conf