LU-8873 osd: use sa_handle_get_from_db()

LU-8873 osd: use sa_handle_get_from_db()

use sa_handle_get_from_db() instead of sa_handle_get() and
save on object->dnode lookup

Change-Id: I2a23e36c3c98ecf4ec00ac590a32d2c14a867aa0
Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-on: https://review.whamcloud.com/24004
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Tested-by: Jenkins
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>