new ropsten ttd (#3903)

Signed-off-by: Justin Florentine <justin+github@florentine.us>

config/src/main/resources/ropsten.json

@@ -10,7 +10,7 @@
     "muirGlacierBlock": 7117117,
     "berlinBlock": 9812189,
     "londonBlock": 10499401,
-    "terminalTotalDifficulty": 43531756765713534,
+    "terminalTotalDifficulty": 100000000000000000000000,
     "ethash": {
     },
     "discovery": {
@@ -886,4 +886,4 @@
       "balance": "1000000000000000000000000000000"
     }
   }
-}
+}

config/src/test/java/org/hyperledger/besu/config/GenesisConfigFileTest.java

@@ -205,7 +205,7 @@ public class GenesisConfigFileTest {
 
     assertThat(ropstenOptions.getTerminalTotalDifficulty()).isPresent();
     assertThat(ropstenOptions.getTerminalTotalDifficulty().get())
-        .isEqualTo(UInt256.valueOf(43531756765713534L));
+        .isEqualTo(UInt256.valueOf(new BigInteger("100000000000000000000000")));
   }
 
   @Test