Automatically start Integrity service on Red Hat 7

On our Red Hat 6 servers we had a file in /etc/init.d to start our Integrity server process in case the server was rebootet that read as follows:

runuser -l integrity -c "cd <server install>/bin; ./mksis $*"

However, under Red Hat 7 servers the mechanism is slightly different and systemd is used instead.

I was wondering if someone already set this up and might give a hint on the usage.