Update petertodd's testnet seed

New seed with servicebit filtering support.

src/chainparams.cpp

@@ -207,7 +207,7 @@ public:
         vSeeds.clear();
         // nodes with support for servicebits filtering should be at the top
         vSeeds.push_back(CDNSSeedData("testnetbitcoin.jonasschnelli.ch", "testnet-seed.bitcoin.jonasschnelli.ch", true));
-        vSeeds.push_back(CDNSSeedData("bitcoin.petertodd.org", "testnet-seed.bitcoin.petertodd.org"));
+        vSeeds.push_back(CDNSSeedData("petertodd.org", "seed.tbtc.petertodd.org", true));
         vSeeds.push_back(CDNSSeedData("bluematt.me", "testnet-seed.bluematt.me"));
         vSeeds.push_back(CDNSSeedData("bitcoin.schildbach.de", "testnet-seed.bitcoin.schildbach.de"));