Upgrade to eureka 1.6.0

fixes gh-1345

spring-cloud-netflix-dependencies/pom.xml

@@ -15,7 +15,7 @@
 	<description>Spring Cloud Netflix Dependencies</description>
 	<properties>
 		<archaius.version>0.7.4</archaius.version>
-		<eureka.version>1.4.11</eureka.version>
+		<eureka.version>1.6.0</eureka.version>
 		<feign.version>9.3.1</feign.version>
 		<hystrix.version>1.5.6</hystrix.version>
 		<ribbon.version>2.2.0</ribbon.version>

spring-cloud-netflix-eureka-client/src/test/java/org/springframework/cloud/netflix/eureka/config/DiscoveryClientConfigServiceAutoConfigurationTests.java

@@ -26,6 +26,7 @@ import org.springframework.boot.test.util.EnvironmentTestUtils;
 import org.springframework.cloud.commons.util.UtilAutoConfiguration;
 import org.springframework.cloud.config.client.ConfigClientProperties;
 import org.springframework.cloud.config.client.DiscoveryClientConfigServiceBootstrapConfiguration;
+import org.springframework.cloud.netflix.eureka.CloudEurekaClient;
 import org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
@@ -99,7 +100,7 @@ public class DiscoveryClientConfigServiceAutoConfigurationTests {
 		@Bean
 		public EurekaClient eurekaClient(ApplicationInfoManager manager) {
 			InstanceInfo info = manager.getInfo();
-			EurekaClient client = Mockito.mock(EurekaClient.class);
+			EurekaClient client = Mockito.mock(CloudEurekaClient.class);
 			given(client.getInstancesByVipAddress(DEFAULT_CONFIG_SERVER, false))
 					.willReturn(Arrays.asList(info));
 			return client;

spring-cloud-netflix-eureka-server/src/main/java/org/springframework/cloud/netflix/eureka/server/EurekaServerConfigBean.java

@@ -188,6 +188,8 @@ public class EurekaServerConfigBean implements EurekaServerConfig, EurekaConstan
 
 	private AwsBindingStrategy bindingStrategy = AwsBindingStrategy.EIP;
 
+	private int minAvailableInstancesForPeerReplication = -1;
+
 	@Override
 	public boolean shouldEnableSelfPreservation() {
 		return this.enableSelfPreservation;
@@ -267,4 +269,9 @@ public class EurekaServerConfigBean implements EurekaServerConfig, EurekaConstan
 		}
 		return null;
 	}
+
+	@Override
+	public int getHealthStatusMinNumberOfAvailablePeers() {
+		return this.minAvailableInstancesForPeerReplication;
+	}
 }