Clean up systemd script
Clean up systemd script

Nodepool should now load properly after reboot.  Also remove
sysloging by default, since we have log files. And support safe
shutdown.

Change-Id: I59c9af8cc73aa15226198eecb2fa4463db05f089
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack/ansible-role-nodepool,openstack/ansible-role-nodepool