add generic survival server to v6 server list (#7510)

fourth time messing up, hopefully the other mess ups didnt get pushed as pull requests

servers_v6.json

@@ -3,6 +3,10 @@
     "name": "Sectorized",
     "address": ["sectorized.ddns.net"]
   },
+  {
+    "name": "generic survival",
+    "address": ["212.192.29.92:25554"]
+  },
   {
     "name": "{AA}",
     "address": ["recessive.net"]