LU-12678 lnet: use list_move where appropriate.

LU-12678 lnet: use list_move where appropriate.

There are several places in lustre where "list_del" (or occasionally
"list_del_init") is followed by "list_add" or "list_add_tail" which
moves the object to a different list.
These can be combined into "list_move" or "list_move_tail".

Test-Parameters: trivial testlist=sanity-lnet

Change-Id: I481de128ea40928186f78a0a0cc26e89b43f1645
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-on: https://review.whamcloud.com/36339
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Neil Brown <neilb@suse.de>
Reviewed-by: Shaun Tancheff <stancheff@cray.com>
Reviewed-by: Petros Koutoupis <pkoutoupis@cray.com>
Reviewed-by: Amir Shehata <ashehata@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>