syslog-ng_3.5.4.1: modify to fix the error

1) modified "--localstatedir" from /var/run to /var/lib
2) delete "Type=notify" from syslog-ng.service.
   Otherwise syslog-ng.service can't be start successfully.

Signed-off-by: Li Xin <lixin.fnst@cn.fujitsu.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>