IPv6 in site-internal network for Nebula-over-IPv6

[GoliathLabs]

Things to keep in mind:

• minion_external_ip6 Salt mine function like needs to be updated to exclude these addresses

  minion_external_ip6:
    - mine_function: network.ip_addrs6
    {%- if pillar['netbox']['site']['id'] == 18 %}
    - cidr: 2001:678:e68:ff00::/64
    {%- else %}
    - cidr: 2001:678:ed0:ff00::/64
    {%- endif %}