test: install lxc on travis
test: install lxc on travis

claudyus/LXC-Web-Panel,romses/LXC-Web-Panel,romses/LXC-Web-Panel,romses/LXC-Web-Panel,claudyus/LXC-Web-Panel,romses/LXC-Web-Panel,claudyus/LXC-Web-Panel,claudyus/LXC-Web-Panel