factory publish delay [was New Tumbleweed snapshot 20210325]

20210325 was the first large snapshot to trigger my new logic for a longer publish delay (6h instead of 2h). The publisher became active when the repo age was 22203 s and the repo rsync log had 32114 lines and 2091370 byte. This time, download.o.o seems to have had a much better time handling the load than with previous full rebuilds. Though this seems to have been only a partial rebuild because there are 62802 entries in factory/repo Medium-term we can do more fine-tuning to balance publish delay vs load of download.o.o Ciao Bernhard M.