[ISSUE#3091] Fix address server can't start up by implement an empty auth manager. (#3456)

* Fix #3091 by empty auth manager.

* Fix #3091 by empty auth manager.

* Use conditional to solve bean conflict

address/src/main/java/com/alibaba/nacos/address/auth/AddressServerAuthManager.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.alibaba.nacos.address.auth;
+
+import com.alibaba.nacos.core.auth.AccessException;
+import com.alibaba.nacos.core.auth.AuthManager;
+import com.alibaba.nacos.core.auth.Permission;
+import com.alibaba.nacos.core.auth.User;
+
+/**
+ * Address server auth manager.
+ *
+ * <p>For #3091, Only implement an empty auth manager so that address server can startup.</p>
+ *
+ * @author xiweng.yy
+ */
+public class AddressServerAuthManager implements AuthManager {
+    
+    @Override
+    public User login(Object request) throws AccessException {
+        User result = new User();
+        result.setUserName("nacos");
+        return result;
+    }
+    
+    @Override
+    public void auth(Permission permission, User user) throws AccessException {
+    }
+}

address/src/main/java/com/alibaba/nacos/address/configuration/AddressServerSpringConfiguration.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.alibaba.nacos.address.configuration;
+
+import com.alibaba.nacos.address.auth.AddressServerAuthManager;
+import com.alibaba.nacos.core.auth.AuthManager;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Address server spring configuration.
+ *
+ * @author xiweng.yy
+ */
+@Configuration
+public class AddressServerSpringConfiguration {
+    
+    @Bean
+    @ConditionalOnMissingBean(value = AuthManager.class)
+    public AuthManager getAuthManager() {
+        return new AddressServerAuthManager();
+    }
+}