LU-8497 osp: handle remote -ENOMEM from osp_send_update_req()

LU-8497 osp: handle remote -ENOMEM from osp_send_update_req()

In osp_send_update_req() detect an unsent request by checking
rq_queued_time == 0 rather than rq_set == NULL, which is always true
after returning from ptlrpc_queue_wait().

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: Ief959b71600157a9c3521775cc06994326e50c51
Reviewed-on: https://review.whamcloud.com/30083
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>