Since CentOS Stream 8 is EOL, this commit updates the
config to use vault.centos.org for CentOS Stream 8.
This should be removed once the base image (ceph) is
updated to a version with a newer CentOS.
Signed-off-by: Praveen M <m.praveen@ibm.com>
(cherry picked from commit 5809628523cd8b68d010fd84a3e95cf0e3832394)