ceph: revert "ceph: osd append instead of replace"
ceph: revert "ceph: osd append instead of replace"

This reverts commit 75533182352f41368363b66e9fbc55765db40f9b.
The append puts the filter at the end of the file and it's out of any
lvm section, so it does not work anymore.

LVM complains with:

Configuration setting "filter" invalid. It's not part of any section.

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

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