Better QA endpoints

[jimaek]

The issue keeps coming up. Even reliable servers keep failing the QA test because of weirdness from the selected root-servers

root@globalping-probe:~# curl ipinfo.io
{
  "ip": "143.110.217.4",
  "city": "Toronto",
  "region": "Ontario",
  "country": "CA",
  "loc": "43.5272,-79.6617",
  "org": "AS14061 DigitalOcean, LLC",
  "postal": "L5K",
  "timezone": "America/Toronto",
  "readme": "https://ipinfo.io/missingauth"
root@globalping-probe:~# ping k.root-servers.net
PING k.root-servers.net (193.0.14.129) 56(84) bytes of data.
64 bytes from k.root-servers.net (193.0.14.129): icmp_seq=1 ttl=46 time=325 ms
64 bytes from k.root-servers.net (193.0.14.129): icmp_seq=3 ttl=46 time=324 ms
64 bytes from k.root-servers.net (193.0.14.129): icmp_seq=4 ttl=46 time=324 ms
^C
--- k.root-servers.net ping statistics ---
4 packets transmitted, 3 received, 25% packet loss, time 3030ms
rtt min/avg/max/mdev = 323.883/324.415/325.111/0.514 ms

We should either select a different group of root servers or try to find better endpoints.

https://root-servers.org/