[build/sysv] fix missing env variable rename

Author: jbudz

src/dev/build/tasks/os_packages/service_templates/sysv/etc/init.d/kibana

@@ -22,7 +22,7 @@ pidfile="/var/run/kibana/$name.pid"
 [ -r /etc/default/$name ] && . /etc/default/$name
 [ -r /etc/sysconfig/$name ] && . /etc/sysconfig/$name
 
-export KIBANA_PATH_CONF
+export KBN_PATH_CONF
 export NODE_OPTIONS
 
 [ -z "$nice" ] && nice=0