Revert "Raised the default version of Mongo to 3.6.5 when using Embedded Mongo."

This reverts commit 1a4ad96dd0. Reverting
to see if this fixes CI timeouts.

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfiguration.java

@@ -35,7 +35,6 @@ import de.flapdoodle.embed.mongo.config.RuntimeConfigBuilder;
 import de.flapdoodle.embed.mongo.config.Storage;
 import de.flapdoodle.embed.mongo.distribution.Feature;
 import de.flapdoodle.embed.mongo.distribution.IFeatureAwareVersion;
-import de.flapdoodle.embed.mongo.distribution.Version;
 import de.flapdoodle.embed.mongo.distribution.Versions;
 import de.flapdoodle.embed.process.config.IRuntimeConfig;
 import de.flapdoodle.embed.process.config.io.ProcessOutput;
@@ -126,8 +125,11 @@ public class EmbeddedMongoAutoConfiguration {
 	@Bean
 	@ConditionalOnMissingBean
 	public IMongodConfig embeddedMongoConfiguration() throws IOException {
+		IFeatureAwareVersion featureAwareVersion = Versions.withFeatures(
+				new GenericVersion(this.embeddedProperties.getVersion()),
+				this.embeddedProperties.getFeatures().toArray(new Feature[0]));
 		MongodConfigBuilder builder = new MongodConfigBuilder()
-				.version(determineVersion());
+				.version(featureAwareVersion);
 		EmbeddedMongoProperties.Storage storage = this.embeddedProperties.getStorage();
 		if (storage != null) {
 			String databaseDir = storage.getDatabaseDir();
@@ -147,20 +149,6 @@ public class EmbeddedMongoAutoConfiguration {
 		return builder.build();
 	}
 
-	private IFeatureAwareVersion determineVersion() {
-		if (this.embeddedProperties.getFeatures() == null) {
-			for (Version version : Version.values()) {
-				if (version.asInDownloadPath()
-						.equals(this.embeddedProperties.getVersion())) {
-					return version;
-				}
-			}
-		}
-		return Versions.withFeatures(
-				new GenericVersion(this.embeddedProperties.getVersion()),
-				this.embeddedProperties.getFeatures().toArray(new Feature[0]));
-	}
-
 	private InetAddress getHost() throws UnknownHostException {
 		if (this.properties.getHost() == null) {
 			return InetAddress.getByAddress(Network.localhostIsIPv6()

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2018 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -16,6 +16,8 @@
 
 package org.springframework.boot.autoconfigure.mongo.embedded;
 
+import java.util.Collections;
+import java.util.HashSet;
 import java.util.Set;
 
 import de.flapdoodle.embed.mongo.distribution.Feature;
@@ -35,15 +37,15 @@ public class EmbeddedMongoProperties {
 	/**
 	 * Version of Mongo to use.
 	 */
-	private String version = "3.6.5";
+	private String version = "3.2.2";
 
 	private final Storage storage = new Storage();
 
 	/**
-	 * Comma-separated list of features to enable. Uses the defaults of the configured
-	 * version by default.
+	 * Comma-separated list of features to enable.
 	 */
-	private Set<Feature> features = null;
+	private Set<Feature> features = new HashSet<>(
+			Collections.singletonList(Feature.SYNC_DELAY));
 
 	public String getVersion() {
 		return this.version;

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/mongo/embedded/EmbeddedMongoAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2018 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -60,20 +60,19 @@ public class EmbeddedMongoAutoConfigurationTests {
 
 	@Test
 	public void defaultVersion() {
-		assertVersionConfiguration(null, "3.6.5");
+		assertVersionConfiguration(null, "3.2.2");
 	}
 
 	@Test
 	public void customVersion() {
-		assertVersionConfiguration("3.6.3", "3.6.3");
+		assertVersionConfiguration("2.7.1", "2.7.1");
 	}
 
 	@Test
 	public void customFeatures() {
-		load("spring.mongodb.embedded.features=TEXT_SEARCH, SYNC_DELAY, ONLY_WITH_SSL, NO_HTTP_INTERFACE_ARG");
+		load("spring.mongodb.embedded.features=TEXT_SEARCH, SYNC_DELAY");
 		assertThat(this.context.getBean(EmbeddedMongoProperties.class).getFeatures())
-				.containsExactly(Feature.TEXT_SEARCH, Feature.SYNC_DELAY,
-						Feature.ONLY_WITH_SSL, Feature.NO_HTTP_INTERFACE_ARG);
+				.contains(Feature.TEXT_SEARCH, Feature.SYNC_DELAY);
 	}
 
 	@Test