feat(proxy46): add IPv4 to IPv6 proxy
https://gitlab.com/famedly/company/devops/containers/proxy46 needs to be reviewed too.
This role is deployed on 46-sni-proxy-test (159.69.145.149, 2a01:4f8:1c1c:a3e5::1). To test it, we need to deploy a host with A record set to 46-sni-proxy-test's IPv4 address and AAAA record set to another IPv6 server.
Edited by Lukas Lihotzki