New App: Powerdns Recursor

Polling must have access to stats for the device, port 8082 (Agent file could be added to avoid that)

**Graphs:**
Questions
Answers
Cache Performance
Cache Size
Outbound Queries

**Graph changes**
generic_multi:print_total added, allow per-dataset colors, document variables
generic_multi_line: allow per-dataset colors, document variables

html/includes/graphs/application/powerdns-recursor_outqueries.inc.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * powerdns-recursor_outqueries.inc.php
+ *
+ * -Description-
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @package    LibreNMS
+ * @link       http://librenms.org
+ * @copyright  2016 Tony Murray
+ * @author     Tony Murray <murraytony@gmail.com>
+ */
+
+include 'powerdns-recursor.inc.php';
+
+$colours = 'mixed';
+$unit_text = 'Queries/sec';
+
+if (is_file($rrd_filename)) {
+    $rrd_list = array(
+        array(
+            'filename' => $rrd_filename,
+            'ds' => 'all-outqueries',
+            'descr' => 'Total',
+            'area' => true,
+        ),
+        array(
+            'filename' => $rrd_filename,
+            'ds' => 'ipv6-outqueries',
+            'descr' => 'IPv6',
+            'area' => true,
+        ),
+        array(
+            'filename' => $rrd_filename,
+            'ds' => 'tcp-outqueries',
+            'descr' => 'TCP',
+            'area' => true,
+        ),
+        array(
+            'filename' => $rrd_filename,
+            'ds' => 'throttled-out',
+            'descr' => 'Throttled',
+            'area' => true,
+        ),
+        array(
+            'filename' => $rrd_filename,
+            'ds' => 'outgoing-timeouts',
+            'descr' => 'Timeouts',
+            'area' => true,
+        )
+    );
+} else {
+    echo "file missing: $rrd_filename";
+}
+
+require 'includes/graphs/generic_multi_line.inc.php';