idledead client dont interrupt writes

idledead client dont interrupt writes

allowing failover is nonsensical, there's nothing to fail to. keep trying to
write. if we want to change this, we need to handle it better than just this.

Change-Id: Ibed4c63182f44ed9e659895e4868b4192d004688
Reviewed-on: http://gerrit.openafs.org/1355
Tested-by: Stephan Wiesand <stephan.wiesand@desy.de>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 01f42cad663cc860e451f694f973ca46f03289ff)
Reviewed-on: http://gerrit.openafs.org/1359