add test configuration where a in-view zone collides with a existing zone

bin/tests/system/checkconf/bad-in-view-dup.conf

@@ -0,0 +1,19 @@
+/*
+ * 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.
+ */
+
+view a {
+	zone x { type master; file "x"; };
+};
+
+view b {
+	zone x { type master; file "x"; };
+	zone x { in-view a; };
+};