LU-4545 hsm: Always report errors to coordinator.

LU-4545 hsm: Always report errors to coordinator.

Make sure feedback on processed items gets properly delivered to the
coordinator even if errors occur between action item delivery and
item processing initialization phase.

Lustre commit: 344a261080d462c29cf45b075deacf793c92e197
Lustre change: http://review.whamcloud.com/9310

Change-Id: I9b79f049728d011480dd86ef6baa23e39a124634
Signed-off-by: Henri Doreau <henri.doreau@cea.fr>
Reviewed-on: http://review.whamcloud.com/9708
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: jacques-Charles Lafoucriere <jacques-charles.lafoucriere@cea.fr>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>