[Libvirt-cim] [PATCH 0 of 3] [TEST] bundles of LXC support

patch 1 includes all the helper function changes for LXC tc running patch 2 adds LXCXML class, you can use it to define a lxc domain, also you can add more functions in it to support more devices patch 3 changes ComputerSystem.01&03 and related lib to reflect the lxc changes Signed-off-by: Guolian Yun <yunguol@cn.ibm.com>