nfs-proxy: kill mover if we get a timeout on redirect

a lite version of 7c3d400b656b2531c1f19701d7ad96707aa65e89

Ticket: #8525
Acked-by:
Target: 2.6
Require-book: no
Require-notes: no
(cherry picked from commit a6c6f1226ab1de57e23a688177d3298a3c2198ea)