LU-7988 hsm: remove compound_id from mdt_hsm_add_actions proto

LU-7988 hsm: remove compound_id from mdt_hsm_add_actions proto

mdt_hsm_request is the only caller of mdt_hsm_add_actions and it
doesn't care about compound_id, so make it a local variable, instead
of an output variable.

Test-Parameters: trivial testlist=sanity-hsm
Signed-off-by: frank zago <fzago@cray.com>
Change-Id: Iabf89497aad2cdf6364c155290c6df44487d8039
Reviewed-on: http://review.whamcloud.com/19583
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Vinayak <vinayakswami.hariharmath@seagate.com>
Reviewed-by: Patrick Farrell <paf@cray.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>