Support controller reloading for templates, appliances and projects. Ref #1743

init/gns3.service.systemd

@@ -12,6 +12,7 @@ ExecStartPre=/bin/mkdir -p /var/log/gns3 /var/run/gns3
 ExecStartPre=/bin/chown -R gns3:gns3 /var/log/gns3 /var/run/gns3
 ExecStart=/usr/local/bin/gns3server --log /var/log/gns3/gns3.log \
  --pid /var/run/gns3/gns3.pid --daemon
+ExecReload=/bin/kill -s HUP $MAINPID
 Restart=on-abort
 PIDFile=/var/run/gns3/gns3.pid