CentOS 8 EOL'd at the end of 2021. OpenDev is beginning the process of
removing the image and starting with some job cleanups like the job
cleanups in this change. Users can use CentOS 8 Stream or some other
RHEL alike.
Change-Id: I9dab417b28a0503e1409e70953ed275f2c6f8c30
88c1c731e6