lxc confine: enable sliver /dev/net/tun access
confine.lib: command confine_sliver_deploy ignore description parameters
vct.conf.default: update VCT_SLICE_DEBIAN_TEMPLATE_URL=http://media.confine-project.eu/vct/debian32-02.tgz
confine: disable telnet in openwrt slivers
vct update: VCT_NODE_TEMPLATE_URL=http://media.confine-project.eu/vct/openwrt-x86-generic-combined-ext4-bare-bones_10-x86.img.gz