4447. [tuning] Allow the fstrm_iothr_init() options to be set using

named.conf to control how dnstap manages the data
                        flow. [RT #42974]

(cherry picked from commit 934837913f)

bin/tests/system/dnstap/bad-fstrm-set-flush-timeout-min.conf

@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) 2016  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/.
+ */
+
+options {
+	fstrm-set-flush-timeout 601;
+};