patch-plugins_node.d_bind9__rndc.in

--- plugins/node.d/bind9_rndc.in.orig	2018-03-25 14:01:24 UTC
+++ plugins/node.d/bind9_rndc.in
@@ -13,6 +13,7 @@ The following environment variables are 
     env.rndc		/usr/sbin/rndc
     env.rndc_options	
     env.querystats      /var/run/named.stats
+    env.rndckeyfile     /etc/namedb/rndc.key
 
 The user/group that runs the plugin must have read access to the stats
 file.  To change user or group (usually Munin plugins are run as
@@ -62,9 +63,11 @@ License not documented.
 use strict;
 
 my $rndc = defined($ENV{rndc}) ? $ENV{rndc} : '/usr/sbin/rndc';
-my $rndc_options = defined($ENV{rndc_options}) ? $ENV{rndc_options} : '';
+my $rndckeyfile = $ENV{rndckeyfile} ? $ENV{rndckeyfile} : '/etc/namedb/rndc.key';
 my $querystats = $ENV{querystats} || '/var/run/named.stats';
 my %IN;
+my @IN_KEYS;
+my @args = ("$rndc","-k","$rndckeyfile","stats");
 
 # attempt to create log file if it doesn't exist
 if ( ! -r $querystats ) {