LU-4512 hsm: Fix lhsmtool_posix --report option

LU-4512 hsm: Fix lhsmtool_posix --report option

The --report option is intended to allow an override of the
default copytool progress reporting interval, but it doesn't
work. This commit implements the intended functionality and
renames the option to "--update-progress", or "-u" for short.

Also fixes the progress display in hsm/active_requests to
reflect the change from percentage complete to bytes moved.

Signed-off-by: Michael MacDonald <michael.macdonald@intel.com>
Change-Id: Id6ead1b33868e3454f00053165944bc3900cabb4
Reviewed-on: http://review.whamcloud.com/8934
Tested-by: Jenkins
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: jacques-Charles Lafoucriere <jacques-charles.lafoucriere@cea.fr>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>