Feed sync via rsync aborts

@peektwice Found the lock file it was hidden and now it works correctly

GVM 11 runs now but every scan i run ends up in a error: It was not possible to start the scan,because a pending feed update. Please try later

Running the command greenbone-nvt-sync results in download loading some files and afer a couple of secods:
rsync: failed to connect to feed.community.greenbone.net (45.135.106.142): Connection refused (111)