LU-8066 obd: Move /proc/fs/lustre root level files to sysfs

LU-8066 obd: Move /proc/fs/lustre root level files to sysfs

except devices, for now.

Linux-commit : 8b82844505699f10f80c7e554364e3d0618cd77d

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Change-Id: Iacdba1e0f703eb90688c1b93a2ef81c0c8ad7a91
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/23425
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Emoly Liu <emoly.liu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>