[lxc-top] Add memory+swap monitoring
[lxc-top] Add memory+swap monitoring

This is patch add memory + swap monitoring from lxc-top tool

Signed-off-by: Alexandr Nevenchanniy <fa01dd4f49524a4568c0c289e7d5b62098341fe1@gmail.com>

aeris/lxc,caglar10ur/lxc,hallyn/lxc,LynxChaus/lxc,federicobriata/lxc,terceiro/lxc,thmo/lxc,LynxChaus/lxc,ss1h2a3tw/lxc,federicobriata/lxc,ss1h2a3tw/lxc,LynxChaus/lxc,terceiro/lxc,hallyn/lxc,terceiro/lxc,federicobriata/lxc,aeris/lxc,hallyn/lxc,caglar10ur/lxc,thmo/lxc,thmo/lxc,ss1h2a3tw/lxc,caglar10ur/lxc,aeris/lxc