LU-5030 util: migrate lctl params functions to use cfs_get_paths()

Make the normal lctl set_param,list_param, and get_param
operations to use the new cfs_get_paths() function which
enables sysfs support along side procfs.

Change-Id: I5817e96c3172de53930776f0891f2a642907bfde
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Signed-off-by: Wang Chao <chao.ornl@gmail.com>
Reviewed-on: http://review.whamcloud.com/17466
Reviewed-by: Ryan Haasken <haasken@cray.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>