feeder/seweb: restart automatically on reboot

use enable and enable-linger for this

single.py

@@ -55,10 +55,13 @@ class SingleManager(ServiceManager):
             action = 'restart'
         else:
             action = 'start'
+        os.system('loginctl enable-linger')
         self.systemd_action(service, action)
+        self.systemd_action(service, 'enable')
 
     def do_stop(self, ins, service=None, *args):
         self.systemd_action(service, 'stop')
+        self.systemd_action(service, 'disable')
 
 
 class FeederManager(SingleManager):