LU-56 lnet: abstract container for EQ/ME/MD

LU-56 lnet: abstract container for EQ/ME/MD

This patch implemented a simple resource container for LNet,
it also created several instances of it to manage different LNet
objects (EQ/ME/MD), instead of putting resources in global
table/list.
It's a work step of LNet SMP improvements, we will create instances
for each CPT in following patches.

Signed-off-by: Liang Zhen <liang@whamcloud.com>
Change-Id: I5e03d618a5c932f032b45b4acdbd4aec546cf9a9
Reviewed-on: http://review.whamcloud.com/2921
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Bobi Jam <bobijam@whamcloud.com>
Reviewed-by: Lai Siyao <laisiyao@whamcloud.com>
Reviewed-by: Doug Oucharek <doug@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>