bundles/icinga2: notify per sms if ntfy does not respond in time

bundles/icinga2/files/scripts/icinga_notification_wrapper

@@ -129,11 +129,14 @@ def notify_per_ntfy():
             data=message_text,
             headers=headers,
             auth=(CONFIG['ntfy']['user'], CONFIG['ntfy']['password']),
+            timeout=10,
         )
 
         r.raise_for_status()
     except Exception as e:
         log_to_syslog('Sending a Notification failed: {}'.format(repr(e)))
+        return False
+    return True
 
 
 def notify_per_mail():
@@ -199,7 +202,8 @@ if __name__ == '__main__':
         notify_per_mail()
 
     if args.sms:
-        if not args.service_name:
-            notify_per_sms()
+        ntfy_worked = False
         if CONFIG['ntfy']['user']:
-            notify_per_ntfy()
+            ntfy_worked = notify_per_ntfy()
+        if not args.service_name or not ntfy_worked:
+            notify_per_sms()