[CentOS] heads up: stream8 cloud-init rebase 20 to 21

Mon Jul 26 23:24:40 UTC 2021
Leon Fauster <leonfauster at googlemail.com>

FYI and everyone on C8S: cloud-init does run on deployed cloud
vm's anymore succesfully after update (it was rebased from 20. to 21.).

Fix: before rebooting run "cloud-init clean"

--
Leon