kclient: send messages with default priority (to match mds)
kclient: send messages with default priority (to match mds)

Make our default priority match the mds.  This is only important because
we occasionally resend and incoming message out again without fixing the
priority to match our default, which means out-of-order processing on
the other end.

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