Use a working DHT node for bootstrap tests.

A lot of bootstrap nodes are down :(.

Author: iphydf

src/test/java/im/tox/tox4j/ToxCoreTestBase.scala

@@ -10,6 +10,7 @@ import org.scalatest.Assertions
 object ToxCoreTestBase extends Assertions {
 
   private[tox4j] val nodeCandidates = Seq(
+    new DhtNode("163.172.136.118", "2001:bc8:4400:2100::13:41d", 33445, "2C289F9F37C20D09DA83565588BF496FAB3764853FA38141817A72E3F18ACA0B"),
     new DhtNode("tox.ngc.zone", "tox.ngc.zone", 33445, "15E9C309CFCB79FDDF0EBA057DABB49FE15F3803B1BFF06536AE2E5BA5E4690E"),
     new DhtNode("node.tox.biribiri.org", null, 33445, "F404ABAA1C99A9D37D61AB54898F56793E1DEF8BD46B1038B9D822E8460FAB67"),
     new DhtNode("192.254.75.102", "2607:5600:284::2", 33445, "951C88B7E75C867418ACDB5D273821372BB5BD652740BCDF623A4FA293E75D2F"),