Litecoin: Add Testnet DNS seeder

src/chainparams.cpp

@@ -223,6 +223,7 @@ public:
         vSeeds.clear();
         vSeeds.push_back(CDNSSeedData("litecointools.com", "testnet-seed.litecointools.com"));
         vSeeds.push_back(CDNSSeedData("loshan.co.uk", "seed-b.litecoin.loshan.co.uk"));
+        vSeeds.push_back(CDNSSeedData("thrasher.io", "dnsseed-testnet.thrasher.io"));
 
         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);