ceph: bump raw block mode support to 14.2.8
ceph: bump raw block mode support to 14.2.8

14.2.7 will only be a CVE fix release so 14.2.8 is the release that will
contain the fixes for ceph-volume partition.

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

rook/nfs,rook/rook,rook/nfs,rook/rook,rook/rook,rook/rook,rook/nfs,rook/rook