Wait for the service to start, not to stop (#573)

Signed-off-by: Horacio Mijail Anton Quiles <hmijail@gmail.com>

Co-authored-by: CJ Hare <CjHare@users.noreply.github.com>

besu/src/main/java/org/hyperledger/besu/Runner.java

@@ -108,7 +108,7 @@ public class Runner implements AutoCloseable {
               besuController.getTransactionPool().getPendingTransactions().evictOldTransactions());
       jsonRpc.ifPresent(service -> waitForServiceToStart("jsonRpc", service.start()));
       graphQLHttp.ifPresent(service -> waitForServiceToStart("graphQLHttp", service.start()));
-      websocketRpc.ifPresent(service -> waitForServiceToStop("websocketRpc", service.start()));
+      websocketRpc.ifPresent(service -> waitForServiceToStart("websocketRpc", service.start()));
       metrics.ifPresent(service -> waitForServiceToStart("metrics", service.start()));
       LOG.info("Ethereum main loop is up.");
       writeBesuPortsToFile();