LU-8066 misc: replace remaining /proc access with lctl

LU-8066 misc: replace remaining /proc access with lctl

Replace most remaining parameter access references with calls to
"lctl get_param" or "lctl set_param", since these aprameters are
moved as needed to meet upstream kernel requirements.

The last few stragglers are in the output of specific tools that
will need to be fixed before their output will be correct.

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I4bbd7bf1bcbe8dadf612daa4917af337d23ebbe5
Reviewed-on: https://review.whamcloud.com/39578
Reviewed-by: Ben Evans <beevans@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>