- There are some locations where we need the raw IPv6 address instead of the
url-quoted version enclosed in brackets.
- Make nova-api-metadata service listen on IPv6 when we need that.
- Use SERVICE_HOST instead of HOST_IP for TLS_IP.
Change-Id: Id074be38ee95754e88b7219de7d9beb06f796fad
Partial-Bug: 1656329