remove j2 file extensions

files/init/update_issue.service

@@ -1,10 +1,12 @@
 [Unit]
-Description=Update /etc/issue with ethN IP addresses
+Description=Update login screen with IP addresses
 After=network-online.target
 
 [Service]
 ExecStart=/root/update_issue.sh
-Type=oneshot
+Type=simple
+User=root
+Group=root
 
 [Install]
 WantedBy=multi-user.target