mount.ceph, errno: Avoid printing binary, clarify message.
mount.ceph, errno: Avoid printing binary, clarify message.

Payload is a binary key, printing it to stdout is not helpful.

Key name is often "client", make the message easier to understand.

Signed-off-by: Tommi Virtanen <9ab2264cc7e4806727ef3fc8f99e05b759bbf6e0@dreamhost.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph