Added wallets() method to access list of wallets in config

src/main/java/fucoin/configurations/AbstractConfiguration.java

@@ -89,6 +89,10 @@ public abstract class AbstractConfiguration extends AbstractNode {
         return activeActors.get(ThreadLocalRandom.current().nextInt(activeActors.size()));
     }
 
+    public List<ActorRef> wallets() {
+        return this.activeActors;
+    }
+
     /**
      * Create the supervisor node
      * @return