Enable unit teset for etcd registry

Author: ralf0131

dubbo-registry/dubbo-registry-etcd3/src/test/java/org/apache/dubbo/registry/etcd/EtcdRegistryTest.java

@@ -72,7 +72,6 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;
 
-@Disabled
 public class EtcdRegistryTest {
 
     String service = "org.apache.dubbo.internal.test.DemoServie";

dubbo-remoting/dubbo-remoting-etcd3/src/test/java/org/apache/dubbo/remoting/etcd/jetcd/JEtcdClientTest.java

@@ -47,7 +47,6 @@
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
-@Disabled
 public class JEtcdClientTest {
 
     JEtcdClient client;

dubbo-remoting/dubbo-remoting-etcd3/src/test/java/org/apache/dubbo/remoting/etcd/jetcd/JEtcdClientWrapperTest.java

@@ -53,7 +53,6 @@
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.spy;
 
-@Disabled
 public class JEtcdClientWrapperTest {
 
     JEtcdClientWrapper clientWrapper;