This allows us to manually pass the used RBD keyring or CephFS secret.
Useful mostly when adding external Ceph clusters where we have no other
means to fetch them.
I renamed the previous $secret to $cephfs_secret to be able to use
$secret as parameter.
Signed-off-by: Aaron Lauterer <a.lauterer@proxmox.com>
a4a1fe6419