Use metadata if tags-as-metadata=false for config server

See gh-630

spring-cloud-consul-discovery/src/main/java/org/springframework/cloud/consul/discovery/ConsulDiscoveryProperties.java

@@ -18,6 +18,7 @@ package org.springframework.cloud.consul.discovery;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
@@ -51,7 +52,7 @@ public class ConsulDiscoveryProperties {
 	private List<String> tags = new ArrayList<>();
 
 	/** Metadata to use when registering service. */
-	private Map<String, String> metadata;
+	private Map<String, String> metadata = new LinkedHashMap<>();
 
 	/** Enable tag override for the registered service. */
 	private Boolean enableTagOverride;

spring-cloud-consul-discovery/src/main/java/org/springframework/cloud/consul/discovery/configclient/ConsulConfigServerAutoConfiguration.java

@@ -39,6 +39,8 @@ import org.springframework.util.StringUtils;
 		ConfigServerProperties.class })
 public class ConsulConfigServerAutoConfiguration {
 
+	public static final String CONFIG_PATH_KEY = "configPath";
+
 	@Autowired(required = false)
 	private ConsulDiscoveryProperties properties;
 
@@ -52,7 +54,12 @@ public class ConsulConfigServerAutoConfiguration {
 		}
 		String prefix = this.server.getPrefix();
 		if (StringUtils.hasText(prefix)) {
-			this.properties.getTags().add("configPath=" + prefix);
+			if (this.properties.isTagsAsMetadata()) {
+				this.properties.getTags().add(CONFIG_PATH_KEY + "=" + prefix);
+			}
+			else {
+				this.properties.getMetadata().put(CONFIG_PATH_KEY, prefix);
+			}
 		}
 	}
 

spring-cloud-consul-discovery/src/test/java/org/springframework/cloud/consul/discovery/configclient/ConsulConfigServerAutoConfigurationTests.java

@@ -63,6 +63,18 @@ public class ConsulConfigServerAutoConfigurationTests {
 		assertThat(properties.getTags()).containsExactly("configPath=/config");
 	}
 
+	@Test
+	public void onWhenRequestedMetadata() throws Exception {
+		setup("spring.cloud.config.server.prefix=/config",
+				"spring.cloud.consul.discovery.tags-as-metadata=false");
+		assertThat(
+				this.context.getBeanNamesForType(ConsulDiscoveryProperties.class).length)
+						.isEqualTo(1);
+		ConsulDiscoveryProperties properties = this.context
+				.getBean(ConsulDiscoveryProperties.class);
+		assertThat(properties.getMetadata()).containsEntry("configPath", "/config");
+	}
+
 	private void setup(String... env) {
 		this.context = new SpringApplicationBuilder(
 				PropertyPlaceholderAutoConfiguration.class,