The bridge (vmbr0) and interface name (eth0) were previously hardcoded
in the netif string, and there was no way to set an 802.1Q VLAN tag.
Expose lxc_bridge, lxc_iface_name, and lxc_vlan_tag (optional) so
containers can be attached to non-default bridges or tagged into a VLAN
without forking the role.
Also drop the misleading 'lxc_ipv6 | default(omit)' filter — default(omit)
does not produce omission inside a string context, and lxc_ipv6 always
has a default of 'auto' in defaults/main.yml.
patrick
4f09e886c2