LU-3685 hsm: copy start error should set HP_FLAG_COMPLETED

LU-3685 hsm: copy start error should set HP_FLAG_COMPLETED

If an error occurs when initializing a HSM request, in
ll_ioc_copy_start(), the PROGRESS message, sent to coordinator, should
carry the error code but also HP_FLAG_COMPLETED to mark the request as
finished (with error). If not, the Coordinator will ignore this
message and consider the request is still running.

Signed-off-by: Aurelien Degremont <aurelien.degremont@cea.fr>
Change-Id: Ie5ddbe8b47331202bd085941c681fcaea57ebf69
Reviewed-on: http://review.whamcloud.com/7265
Tested-by: Hudson
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>