Extract Eureka*Config beans into auto configuration

Without extracting to autoconfig the @ConditionalOnMissingBean won't
always work because it is dependent on the order of the configuration
classes being processed (and autoconfig always somes last).

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2013-2014 the original author or authors.
+ *
+ * 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 org.springframework.cloud.netflix.eureka;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.netflix.appinfo.EurekaInstanceConfig;
+import com.netflix.discovery.EurekaClientConfig;
+
+/**
+ * @author Dave Syer
+ *
+ */
+@Configuration
+@EnableConfigurationProperties
+@ConditionalOnClass(EurekaClientConfig.class)
+@ConditionalOnExpression("${eureka.client.enabled:true}")
+public class EurekaClientAutoConfiguration {
+
+	@Bean
+	@ConditionalOnMissingBean(EurekaClientConfig.class)
+	public EurekaClientConfigBean eurekaClientConfigBean() {
+		return new EurekaClientConfigBean();
+	}
+
+	@Bean
+	@ConditionalOnMissingBean(EurekaInstanceConfig.class)
+	public EurekaInstanceConfigBean eurekaInstanceConfigBean() {
+		return new EurekaInstanceConfigBean();
+	}
+
+}

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/eureka/EurekaClientConfiguration.java

@@ -49,9 +49,7 @@ import com.netflix.discovery.EurekaClientConfig;
  *
  */
 @Configuration
-// TODO: make these beans @Conditional
-@EnableConfigurationProperties({ EurekaClientConfigBean.class,
-		EurekaInstanceConfigBean.class })
+@EnableConfigurationProperties
 @ConditionalOnClass(EurekaClientConfig.class)
 @ConditionalOnExpression("${eureka.client.enabled:true}")
 public class EurekaClientConfiguration implements SmartLifecycle, Ordered {

spring-cloud-netflix-core/src/main/resources/META-INF/spring.factories

@@ -1,4 +1,5 @@
 org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
 org.springframework.cloud.netflix.archaius.ArchaiusAutoConfiguration,\
 org.springframework.cloud.netflix.feign.FeignAutoConfiguration,\
+org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration,\
 org.springframework.cloud.netflix.servo.ServoMetricsAutoConfiguration