With this we can use cfs_read_file/cfs_write_file and cfs_lock_file.
Code for writing is mostly copied from pve-managers CephTools.pm,
with the addition of mgr sections.
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
it is not a storage plugin, and it makes more sense to have it
top-level, but there we cannot name it CephTools because of the
existing ones in pve-manager
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
