Fix isSelf address.

[wayilau]

Please answer these questions before submitting pull request

• Why submit this pull request?

• Bug fix

• New feature provided

• Improve performance

• Related issues
  Is this a bug for cluster-etcd-plugin queryRemoteNodes? #3018

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Bug fix

• Bug description.

[wu-sheng]

We are waiting for Apache Jenkins restore.

[rainbend]

Hi All

Should a base class be abstracted to cover the necessary test.

Taking ClusterRegister#registerRemote as an example, various plugins have different implementations.

ps: I don't know if I described it clearly

case 1: NacosCoordinatorTest

    @Test
    public void queryRemoteNodes() throws NacosException {
        registerSelfRemote();
        List<Instance> instances = mockInstance();
        when(namingService.selectInstances(anyString(), anyBoolean())).thenReturn(instances);
        List<RemoteInstance> remoteInstances = coordinator.queryRemoteNodes();
        assertEquals(2, remoteInstances.size());

        RemoteInstance selfInstance = remoteInstances.get(0);
        validate(selfRemoteAddress, selfInstance);

        RemoteInstance notSelfInstance = remoteInstances.get(1);
        validate(remoteAddress, notSelfInstance);
    }

case 2: ZookeeperCoordinatorTest

    @Test
    public void queryRemoteNodes() {
    }

case 3: EtcdCoordinatorTest

    @Test
    public void queryRemoteNodes() {
        registerSelfRemote();

        EtcdKeysResponse.EtcdNode node = PowerMockito.mock(EtcdKeysResponse.EtcdNode.class);
        EtcdKeysResponse.EtcdNode node1 = PowerMockito.mock(EtcdKeysResponse.EtcdNode.class);

        when(response.getNode()).thenReturn(node);
        list = new ArrayList<>();
        List list1 = Mockito.spy(list);
        list1.add(node1);
        when(node.getNodes()).thenReturn(list1);
        when(node1.getValue()).thenReturn("{\"serviceId\":\"my-service\",\"host\":\"10.0.0.2\",\"port\":1001}");
        List<RemoteInstance> remoteInstances = coordinator.queryRemoteNodes();
        assertEquals(1, remoteInstances.size());

        RemoteInstance selfInstance = remoteInstances.get(0);
        velidate(selfRemoteAddress, selfInstance);
    }

[wu-sheng]

/run e2e

[wu-sheng]

@Arugal we are welcome test enhancement. You could send a pull request to do that