LU-2062 hsm: llapi hsm calls for CopyTool

LU-2062 hsm: llapi hsm calls for CopyTool

llapi hsm calls for CopyTool
- llapi_hsm_copytool_start()
- llapi_hsm_copytool_fini()
- llapi_hsm_copytool_recv()
- llapi_hsm_copytool_free()
- llapi_hsm_copy_start()
- llapi_hsm_copy_end()
- llapi_hsm_progress()
- llapi_hsm_import()

and related MDT functions
- mdt_hsm_ct_register()
- mdt_hsm_ct_unregister()
- mdt_hsm_progress()

The new RPC are:
- MDS_HSM_CT_REGISTER
- MDS_HSM_CT_UNREGISTER
- MDS_HSM_PROGRESS

Signed-off-by: JC Lafoucriere <jacques-charles.lafoucriere@cea.fr>
Change-Id: I93617ac6e66a3324344b57f1a22d7c851d715262
Reviewed-on: http://review.whamcloud.com/4736
Tested-by: Hudson
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>