add conditional on nacos discovery enabled to Ribbon

spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/discovery/NacosDiscoveryClientAutoConfiguration.java

@@ -18,7 +18,6 @@ package org.springframework.cloud.alibaba.nacos.discovery;
 
 import org.springframework.boot.autoconfigure.AutoConfigureBefore;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.cloud.alibaba.nacos.ConditionalOnNacosDiscoveryEnabled;
 import org.springframework.cloud.alibaba.nacos.NacosDiscoveryProperties;
@@ -34,7 +33,6 @@ import org.springframework.context.annotation.Configuration;
 @Configuration
 @ConditionalOnNacosDiscoveryEnabled
 @EnableConfigurationProperties
-@ConditionalOnProperty(value = "spring.cloud.nacos.discovery.enabled", matchIfMissing = true)
 @AutoConfigureBefore({ SimpleDiscoveryClientAutoConfiguration.class,
 		CommonsClientAutoConfiguration.class })
 public class NacosDiscoveryClientAutoConfiguration {

spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/registry/NacosServiceRegistry.java

@@ -18,7 +18,6 @@ package org.springframework.cloud.alibaba.nacos.registry;
 
 import com.alibaba.nacos.api.naming.NamingService;
 import com.alibaba.nacos.api.naming.pojo.Instance;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.cloud.alibaba.nacos.NacosDiscoveryProperties;

spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/ribbon/NacosServer.java

@@ -17,7 +17,6 @@
 package org.springframework.cloud.alibaba.nacos.ribbon;
 
 import com.alibaba.nacos.api.naming.pojo.Instance;
-
 import com.netflix.loadbalancer.Server;
 
 import java.util.Map;

spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/ribbon/RibbonNacosAutoConfiguration.java

@@ -19,6 +19,7 @@ package org.springframework.cloud.alibaba.nacos.ribbon;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cloud.alibaba.nacos.ConditionalOnNacosDiscoveryEnabled;
 import org.springframework.cloud.netflix.ribbon.RibbonAutoConfiguration;
 import org.springframework.cloud.netflix.ribbon.RibbonClients;
 import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
@@ -31,6 +32,7 @@ import org.springframework.context.annotation.Configuration;
 @Configuration
 @EnableConfigurationProperties
 @ConditionalOnBean(SpringClientFactory.class)
+@ConditionalOnNacosDiscoveryEnabled
 @ConditionalOnRibbonNacos
 @AutoConfigureAfter(RibbonAutoConfiguration.class)
 @RibbonClients(defaultConfiguration = NacosRibbonClientConfiguration.class)