vpn-statistic: create collectd wrapper to restart collectd when first vpn was created

This wrapper is only used, when the first openvpn RW is created. Then
the collectd has to be restarted to get the vpn Data and create rrd Data

config/rootfiles/common/misc-progs

@@ -2,6 +2,7 @@ usr/local/bin/addonctrl
 #usr/local/bin/applejuicectrl
 usr/local/bin/backupctrl
 #usr/local/bin/clamavctrl
+usr/local/bin/collectdctrl
 usr/local/bin/dhcpctrl
 usr/local/bin/dnsmasqctrl
 usr/local/bin/extrahdctrl

config/rootfiles/core/89/filelists/files

@@ -11,6 +11,7 @@ srv/web/ipfire/cgi-bin/netovpnrw.cgi
 srv/web/ipfire/cgi-bin/netovpnsrv.cgi
 srv/web/ipfire/cgi-bin/ovpnmain.cgi
 srv/web/ipfire/cgi-bin/vpnmain.cgi
+usr/local/bin/collectdctrl
 usr/local/bin/openvpnctrl
 var/ipfire/backup/bin/backup.pl
 var/ipfire/graphs.pl