Fixed - Adding a new slave node in redis-cluster, isSlaveNotUsed does not take effect

Signed-off-by: seakider <seakider@gmail.com>

redisson/src/main/java/org/redisson/connection/ClusterConnectionManager.java

@@ -642,6 +642,10 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
                 continue;
             }
             
+            if (config.isSlaveNotUsed()) {
+                continue;
+            }
+
             CompletableFuture<Void> slaveUpFuture = entry.addSlave(uri, configEndpointHostName);
             CompletableFuture<Void> f = slaveUpFuture.thenAccept(res -> {
                 currentPart.addSlaveAddress(uri);